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怎么在alpine中使用dockerfile創建tomcat鏡像？針對這個問題，這篇文章詳細介紹了相對應的分析和解答，希望可以幫助更多想解決這個問題的小伙伴找到更簡單易行的方法。
1、下載alpine鏡像
[root@docker43 ~]# docker pull alpine Using default tag: latest Trying to pull repository docker.io/library/alpine ... latest: Pulling from docker.io/library/alpine 4fe2ade4980c: Pull complete Digest: sha256:621c2f39f8133acb8e64023a94dbdf0d5ca81896102b9e57c0dc184cadaf5528 Status: Downloaded newer image for docker.io/alpine:latest [root@docker43 ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/alpine latest 196d12cf6ab1 3 weeks ago 4.41 MB
2、通過dockerfile構建鏡像
在其他的資料中很多都是下載包然后在dockerfile 使用COPY進行拷貝，這里我就不這樣做了，我們分開寫(都是通過dockerfile進行構建鏡像)
2.1.構建jdk鏡像
創建jdk目錄
[root@docker43 ~]# cd /opt/ [root@docker43 opt]# mkdir -p alpine_jre && cd alpine_jre && touch Dockerfile [root@docker43 alpine_jre]# ll 總用量 0 -rw-r--r-- 1 root root 0 10月 6 17:39 Dockerfile
編寫dockerfile文件
# 基礎鏡像
FROM alpine
# 作者信息
MAINTAINER JRE Docker Maintainers "1024331014@qq.com"
# 修改源
RUN echo "http://mirrors.aliyun.com/alpine/latest-stable/main/" > /etc/apk/repositories && \
echo "http://mirrors.aliyun.com/alpine/latest-stable/community/" >> /etc/apk/repositories
# 安裝需要的軟件
RUN apk update && \
apk add --no-cache ca-certificates && \
apk add --no-cache curl bash tree tzdata && \
cp -rf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
# 定義環境變量
ENV PATH /usr/local/bin:${PATH}
# 安裝JRE
RUN apk add --nocache openjdk8-jre-base && \
rm -rf /var/cache/apk/*
RUN { \
echo '#!/bin/sh'; \
echo 'set -e'; \
echo; \
echo 'dirname "$(dirname "$(readlink -f "$(which javac || which java)")")"'; \
} > /usr/local/bin/docker-java-home \
&& chmod +x /usr/local/bin/docker-java-home
ENV JAVA_HOME /usr/lib/jvm/default-jvm
ENV PATH ${PATH}:${JAVA_HOME}/bin:${JAVA_HOME}/jre/bin
ENV JAVA_VERSION 8u71
ENV JAVA_ALPINE_VERSION 8.171.11-r0
RUN set -x \
\
&& apk add --no-cache \
\
openjdk8-jre="$JAVA_ALPINE_VERSION"創建鏡像
[root@docker43 alpine_jre]# docker build -t alpine_jre .
查看鏡像
[root@docker43 alpine_jre]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE alpine_jre latest 614bc57ab66e 33 seconds ago 91.1 MB docker.io/alpine latest 196d12cf6ab1 3 weeks ago 4.41 MB
2.2.構建tomcat鏡像
創建tomcat目錄
[root@docker43 ~]# cd /opt/ [root@docker43 opt]# mkdir -p jre_tomcat && cd jre_tomcat && touch Dockerfile [root@docker43 jre_tomcat]# ll 總用量 0 -rw-r--r-- 1 root root 0 10月 6 17:46 Dockerfile
編寫dockerfile(基于上面的alpine_jre鏡像)
#基礎鏡像
FROM alpine_jre
# 作者信息
MAINTAINER tomcat Docker Maintainers "1024331014@qq.com"
# 定義tomcat變量(如果有其他的可以在這里加)
ENV CATALINA_HOME /usr/local/tomcat
ENV PATH $CATALINA_HOME/bin:$PATH
RUN mkdir -p "$CATALINA_HOME"
WORKDIR $CATALINA_HOME
# let "Tomcat Native" live somewhere isolated
ENV TOMCAT_NATIVE_LIBDIR $CATALINA_HOME/native-jni-lib
ENV LD_LIBRARY_PATH ${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}$TOMCAT_NATIVE_LIBDIR
RUN apk add --no-cache gnupg
# see http://archive.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/KEYS
# see also "update.sh" (https://github.com/docker-library/tomcat/blob/master/update.sh)
ENV GPG_KEYS 05AB33110949707C93A279E3D3EFE6B686867BA6 07E48665A34DCAFAE522E5E6266191C37C037D42 47309207D818FFD8DCD3F83F1931D684307A10A5 541FBE7D8F78B25E055DDEE13C370389288584E7 61B832AC2F1C5A90F0F9B00A1C506407564C17A3 713DA88BE50911535FE716F5208B0AB1D63011C7 79F7026C690BAA50B92CD8B66A3AD3F4F22C4FED 9BA44C2621385CB966EBA586F72C284D731FABEE A27677289986DB50844682F8ACB77FC2E86E29AC A9C5DF4D22E99998D9875A5110C01C5A2F6059E7 DCFD35E0BF8CA7344752DE8B6FB21E8933C60243 F3A04C595DB5B6A5F1ECA43E3B7BBB100D811BBE F7DA48BB64BCB84ECBA7EE6935CD23C10D498E23
RUN set -ex; \
for key in $GPG_KEYS; do \
gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
done
# 定義tomcat版本
ENV TOMCAT_MAJOR 8
ENV TOMCAT_VERSION 8.0.53
# 下載
# https://issues.apache.org/jira/browse/INFRA-8753?focusedCommentId=14735394#comment-14735394
ENV TOMCAT_TGZ_URL https://www.apache.org/dyn/closer.cgi?action=download&filename=tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz
# not all the mirrors actually carry the .asc files :'(
ENV TOMCAT_ASC_URL http://archive.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz.asc
# 安裝
RUN set -x \
\
&& apk add --no-cache --virtual .fetch-deps \
ca-certificates \
tar \
openssl \
&& wget -O tomcat.tar.gz "$TOMCAT_TGZ_URL" \
&& wget -O tomcat.tar.gz.asc "$TOMCAT_ASC_URL" \
&& gpg --batch --verify tomcat.tar.gz.asc tomcat.tar.gz \
&& tar -xvf tomcat.tar.gz --strip-components=1 \
&& rm bin/*.bat \
&& rm tomcat.tar.gz* \
\
&& nativeBuildDir="$(mktemp -d)" \
&& tar -xvf bin/tomcat-native.tar.gz -C "$nativeBuildDir" --strip-components=1 \
&& apk add --no-cache --virtual .native-build-deps \
apr-dev \
dpkg-dev dpkg \
gcc \
libc-dev \
make \
"openjdk${JAVA_VERSION%%[-~bu]*}"="$JAVA_ALPINE_VERSION" \
openssl-dev \
&& ( \
export CATALINA_HOME="$PWD" \
&& cd "$nativeBuildDir/native" \
&& gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)" \
&& ./configure \
--build="$gnuArch" \
--libdir="$TOMCAT_NATIVE_LIBDIR" \
--prefix="$CATALINA_HOME" \
--with-apr="$(which apr-1-config)" \
--with-java-home="$(docker-java-home)" \
--with-ssl=yes \
&& make -j$(getconf _NPROCESSORS_ONLN) \
&& make install \
) \
&& runDeps="$( \
scanelf --needed --nobanner --recursive "$TOMCAT_NATIVE_LIBDIR" \
| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
| sort -u \
| xargs -r apk info --installed \
| sort -u \
)" \
&& apk add --virtual .tomcat-native-rundeps $runDeps \
&& apk del .fetch-deps .native-build-deps \
&& rm -rf "$nativeBuildDir" \
&& rm bin/tomcat-native.tar.gz
# verify Tomcat Native is working properly
RUN set -e \
&& nativeLines="$(catalina.sh configtest 2>&1)" \
&& nativeLines="$(echo "$nativeLines" | grep 'Apache Tomcat Native')" \
&& nativeLines="$(echo "$nativeLines" | sort -u)" \
&& if ! echo "$nativeLines" | grep 'INFO: Loaded APR based Apache Tomcat Native library' >&2; then \
echo >&2 "$nativeLines"; \
exit 1; \
fi
# 開發8080端口
EXPOSE 8080
# 執行命令
CMD ["catalina.sh", "run"]創建鏡像
[root@docker43 jre_tomcat]# docker build -t tomcat:1.0 .
查看鏡像
[root@docker43 jre_tomcat]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE tomcat 1.0 64c9cec4375d 7 seconds ago 124 MB alpine_jre latest 614bc57ab66e 8 minutes ago 91.1 MB docker.io/alpine latest 196d12cf6ab1 3 weeks ago 4.41 MB
2.3.構建tomcat_web鏡像
創建tomcat_web目錄(包含Dockerfile和啟動文件)
[root@docker43 ~]# cd /opt/ [root@docker43 opt]# mkdir tomcat_web && cd tomcat_web && touch Dockerfile && touch start.sh [root@docker43 tomcat_web]# ll 總用量 0 -rw-r--r-- 1 root root 0 10月 6 17:53 Dockerfile -rw-r--r-- 1 root root 0 10月 6 17:53 start.sh
編寫start.sh啟動腳本
#!/bin/sh
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# -----------------------------------------------------------------------------
# Control Script for the CATALINA Server
#
# Environment Variable Prerequisites
#
# Do not set the variables in this script. Instead put them into a script
# setenv.sh in CATALINA_BASE/bin to keep your customizations separate.
#
# CATALINA_HOME May point at your Catalina "build" directory.
#
# CATALINA_BASE (Optional) Base directory for resolving dynamic portions
# of a Catalina installation. If not present, resolves to
# the same directory that CATALINA_HOME points to.
#
# CATALINA_OUT (Optional) Full path to a file where stdout and stderr
# will be redirected.
# Default is $CATALINA_BASE/logs/catalina.out
#
# CATALINA_OPTS (Optional) Java runtime options used when the "start",
# "run" or "debug" command is executed.
# Include here and not in JAVA_OPTS all options, that should
# only be used by Tomcat itself, not by the stop process,
# the version command etc.
# Examples are heap size, GC logging, JMX ports etc.
#
# CATALINA_TMPDIR (Optional) Directory path location of temporary directory
# the JVM should use (java.io.tmpdir). Defaults to
# $CATALINA_BASE/temp.
#
# JAVA_HOME Must point at your Java Development Kit installation.
# Required to run the with the "debug" argument.
#
# JRE_HOME Must point at your Java Runtime installation.
# Defaults to JAVA_HOME if empty. If JRE_HOME and JAVA_HOME
# are both set, JRE_HOME is used.
#
# JAVA_OPTS (Optional) Java runtime options used when any command
# is executed.
# Include here and not in CATALINA_OPTS all options, that
# should be used by Tomcat and also by the stop process,
# the version command etc.
# Most options should go into CATALINA_OPTS.
#
# JAVA_ENDORSED_DIRS (Optional) Lists of of colon separated directories
# containing some jars in order to allow replacement of APIs
# created outside of the JCP (i.e. DOM and SAX from W3C).
# It can also be used to update the XML parser implementation.
# Defaults to $CATALINA_HOME/endorsed.
#
# JPDA_TRANSPORT (Optional) JPDA transport used when the "jpda start"
# command is executed. The default is "dt_socket".
#
# JPDA_ADDRESS (Optional) Java runtime options used when the "jpda start"
# command is executed. The default is localhost:8000.
#
# JPDA_SUSPEND (Optional) Java runtime options used when the "jpda start"
# command is executed. Specifies whether JVM should suspend
# execution immediately after startup. Default is "n".
#
# JPDA_OPTS (Optional) Java runtime options used when the "jpda start"
# command is executed. If used, JPDA_TRANSPORT, JPDA_ADDRESS,
# and JPDA_SUSPEND are ignored. Thus, all required jpda
# options MUST be specified. The default is:
#
# -agentlib:jdwp=transport=$JPDA_TRANSPORT,
# address=$JPDA_ADDRESS,server=y,suspend=$JPDA_SUSPEND
#
# JSSE_OPTS (Optional) Java runtime options used to control the TLS
# implementation when JSSE is used. Default is:
# "-Djdk.tls.ephemeralDHKeySize=2048"
#
# CATALINA_PID (Optional) Path of the file which should contains the pid
# of the catalina startup java process, when start (fork) is
# used
#
# LOGGING_CONFIG (Optional) Override Tomcat's logging config file
# Example (all one line)
# LOGGING_CONFIG="-Djava.util.logging.config.file=$CATALINA_BASE/conf/logging.properties"
#
# LOGGING_MANAGER (Optional) Override Tomcat's logging manager
# Example (all one line)
# LOGGING_MANAGER="-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager"
#
# USE_NOHUP (Optional) If set to the string true the start command will
# use nohup so that the Tomcat process will ignore any hangup
# signals. Default is "false" unless running on HP-UX in which
# case the default is "true"
# -----------------------------------------------------------------------------
# OS specific support. $var _must_ be set to either true or false.
cygwin=false
darwin=false
os400=false
hpux=false
case "`uname`" in
CYGWIN*) cygwin=true;;
Darwin*) darwin=true;;
OS400*) os400=true;;
HP-UX*) hpux=true;;
esac
# resolve links - $0 may be a softlink
PRG="$0"
while [ -h "$PRG" ]; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`/"$link"
fi
done
# Get standard environment variables
PRGDIR=`dirname "$PRG"`
# Only set CATALINA_HOME if not already set
[ -z "$CATALINA_HOME" ] && CATALINA_HOME=`cd "$PRGDIR/.." >/dev/null; pwd`
# Copy CATALINA_BASE from CATALINA_HOME if not already set
[ -z "$CATALINA_BASE" ] && CATALINA_BASE="$CATALINA_HOME"
# Ensure that any user defined CLASSPATH variables are not used on startup,
# but allow them to be specified in setenv.sh, in rare case when it is needed.
CLASSPATH=
if [ -r "$CATALINA_BASE/bin/setenv.sh" ]; then
. "$CATALINA_BASE/bin/setenv.sh"
elif [ -r "$CATALINA_HOME/bin/setenv.sh" ]; then
. "$CATALINA_HOME/bin/setenv.sh"
fi
# For Cygwin, ensure paths are in UNIX format before anything is touched
if $cygwin; then
[ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
[ -n "$JRE_HOME" ] && JRE_HOME=`cygpath --unix "$JRE_HOME"`
[ -n "$CATALINA_HOME" ] && CATALINA_HOME=`cygpath --unix "$CATALINA_HOME"`
[ -n "$CATALINA_BASE" ] && CATALINA_BASE=`cygpath --unix "$CATALINA_BASE"`
[ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
fi
# Ensure that neither CATALINA_HOME nor CATALINA_BASE contains a colon
# as this is used as the separator in the classpath and Java provides no
# mechanism for escaping if the same character appears in the path.
case $CATALINA_HOME in
*:*) echo "Using CATALINA_HOME: $CATALINA_HOME";
echo "Unable to start as CATALINA_HOME contains a colon (:) character";
exit 1;
esac
case $CATALINA_BASE in
*:*) echo "Using CATALINA_BASE: $CATALINA_BASE";
echo "Unable to start as CATALINA_BASE contains a colon (:) character";
exit 1;
esac
# For OS400
if $os400; then
# Set job priority to standard for interactive (interactive - 6) by using
# the interactive priority - 6, the helper threads that respond to requests
# will be running at the same priority as interactive jobs.
COMMAND='chgjob job('$JOBNAME') runpty(6)'
system $COMMAND
# Enable multi threading
export QIBM_MULTI_THREADED=Y
fi
# Get standard Java environment variables
if $os400; then
# -r will Only work on the os400 if the files are:
# 1. owned by the user
# 2. owned by the PRIMARY group of the user
# this will not work if the user belongs in secondary groups
. "$CATALINA_HOME"/bin/setclasspath.sh
else
if [ -r "$CATALINA_HOME"/bin/setclasspath.sh ]; then
. "$CATALINA_HOME"/bin/setclasspath.sh
else
echo "Cannot find $CATALINA_HOME/bin/setclasspath.sh"
echo "This file is needed to run this program"
exit 1
fi
fi
# Add on extra jar files to CLASSPATH
if [ ! -z "$CLASSPATH" ] ; then
CLASSPATH="$CLASSPATH":
fi
CLASSPATH="$CLASSPATH""$CATALINA_HOME"/bin/bootstrap.jar
if [ -z "$CATALINA_OUT" ] ; then
CATALINA_OUT="$CATALINA_BASE"/logs/catalina.out
fi
if [ -z "$CATALINA_TMPDIR" ] ; then
# Define the java.io.tmpdir to use for Catalina
CATALINA_TMPDIR="$CATALINA_BASE"/temp
fi
# Add tomcat-juli.jar to classpath
# tomcat-juli.jar can be over-ridden per instance
if [ -r "$CATALINA_BASE/bin/tomcat-juli.jar" ] ; then
CLASSPATH=$CLASSPATH:$CATALINA_BASE/bin/tomcat-juli.jar
else
CLASSPATH=$CLASSPATH:$CATALINA_HOME/bin/tomcat-juli.jar
fi
# Bugzilla 37848: When no TTY is available, don't output to console
have_tty=0
if [ "`tty`" != "not a tty" ]; then
have_tty=1
fi
# For Cygwin, switch paths to Windows format before running java
if $cygwin; then
JAVA_HOME=`cygpath --absolute --windows "$JAVA_HOME"`
JRE_HOME=`cygpath --absolute --windows "$JRE_HOME"`
CATALINA_HOME=`cygpath --absolute --windows "$CATALINA_HOME"`
CATALINA_BASE=`cygpath --absolute --windows "$CATALINA_BASE"`
CATALINA_TMPDIR=`cygpath --absolute --windows "$CATALINA_TMPDIR"`
CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
JAVA_ENDORSED_DIRS=`cygpath --path --windows "$JAVA_ENDORSED_DIRS"`
fi
if [ -z "$JSSE_OPTS" ] ; then
JSSE_OPTS="-Djdk.tls.ephemeralDHKeySize=2048"
fi
JAVA_OPTS="$JAVA_OPTS $JSSE_OPTS"
# Register custom URL handlers
# Do this here so custom URL handles (specifically 'war:...') can be used in the security policy
JAVA_OPTS="$JAVA_OPTS -Djava.protocol.handler.pkgs=org.apache.catalina.webresources"
# Set juli LogManager config file if it is present and an override has not been issued
if [ -z "$LOGGING_CONFIG" ]; then
if [ -r "$CATALINA_BASE"/conf/logging.properties ]; then
LOGGING_CONFIG="-Djava.util.logging.config.file=$CATALINA_BASE/conf/logging.properties"
else
# Bugzilla 45585
LOGGING_CONFIG="-Dnop"
fi
fi
if [ -z "$LOGGING_MANAGER" ]; then
LOGGING_MANAGER="-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager"
fi
# Uncomment the following line to make the umask available when using the
# org.apache.catalina.security.SecurityListener
#JAVA_OPTS="$JAVA_OPTS -Dorg.apache.catalina.security.SecurityListener.UMASK=`umask`"
if [ -z "$USE_NOHUP" ]; then
if $hpux; then
USE_NOHUP="true"
else
USE_NOHUP="false"
fi
fi
unset _NOHUP
if [ "$USE_NOHUP" = "true" ]; then
_NOHUP=nohup
fi
# ----- Execute The Requested Command -----------------------------------------
# Bugzilla 37848: only output this if we have a TTY
if [ $have_tty -eq 1 ]; then
echo "Using CATALINA_BASE: $CATALINA_BASE"
echo "Using CATALINA_HOME: $CATALINA_HOME"
echo "Using CATALINA_TMPDIR: $CATALINA_TMPDIR"
if [ "$1" = "debug" ] ; then
echo "Using JAVA_HOME: $JAVA_HOME"
else
echo "Using JRE_HOME: $JRE_HOME"
fi
echo "Using CLASSPATH: $CLASSPATH"
if [ ! -z "$CATALINA_PID" ]; then
echo "Using CATALINA_PID: $CATALINA_PID"
fi
fi
if [ "$1" = "jpda" ] ; then
if [ -z "$JPDA_TRANSPORT" ]; then
JPDA_TRANSPORT="dt_socket"
fi
if [ -z "$JPDA_ADDRESS" ]; then
JPDA_ADDRESS="localhost:8000"
fi
if [ -z "$JPDA_SUSPEND" ]; then
JPDA_SUSPEND="n"
fi
if [ -z "$JPDA_OPTS" ]; then
JPDA_OPTS="-agentlib:jdwp=transport=$JPDA_TRANSPORT,address=$JPDA_ADDRESS,server=y,suspend=$JPDA_SUSPEND"
fi
CATALINA_OPTS="$JPDA_OPTS $CATALINA_OPTS"
shift
fi
if [ "$1" = "debug" ] ; then
if $os400; then
echo "Debug command not available on OS400"
exit 1
else
shift
if [ "$1" = "-security" ] ; then
if [ $have_tty -eq 1 ]; then
echo "Using Security Manager"
fi
shift
exec "$_RUNJDB" "$LOGGING_CONFIG" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS \
-Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
-sourcepath "$CATALINA_HOME"/../../java \
-Djava.security.manager \
-Djava.security.policy=="$CATALINA_BASE"/conf/catalina.policy \
-Dcatalina.base="$CATALINA_BASE" \
-Dcatalina.home="$CATALINA_HOME" \
-Djava.io.tmpdir="$CATALINA_TMPDIR" \
org.apache.catalina.startup.Bootstrap "$@" start
else
exec "$_RUNJDB" "$LOGGING_CONFIG" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS \
-Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
-sourcepath "$CATALINA_HOME"/../../java \
-Dcatalina.base="$CATALINA_BASE" \
-Dcatalina.home="$CATALINA_HOME" \
-Djava.io.tmpdir="$CATALINA_TMPDIR" \
org.apache.catalina.startup.Bootstrap "$@" start
fi
fi
elif [ "$1" = "run" ]; then
shift
if [ "$1" = "-security" ] ; then
if [ $have_tty -eq 1 ]; then
echo "Using Security Manager"
fi
shift
eval exec "\"$_RUNJAVA\"" "\"$LOGGING_CONFIG\"" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS \
-Djava.endorsed.dirs="\"$JAVA_ENDORSED_DIRS\"" -classpath "\"$CLASSPATH\"" \
-Djava.security.manager \
-Djava.security.policy=="\"$CATALINA_BASE/conf/catalina.policy\"" \
-Dcatalina.base="\"$CATALINA_BASE\"" \
-Dcatalina.home="\"$CATALINA_HOME\"" \
-Djava.io.tmpdir="\"$CATALINA_TMPDIR\"" \
org.apache.catalina.startup.Bootstrap "$@" start
else
eval exec "\"$_RUNJAVA\"" "\"$LOGGING_CONFIG\"" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS \
-Djava.endorsed.dirs="\"$JAVA_ENDORSED_DIRS\"" -classpath "\"$CLASSPATH\"" \
-Dcatalina.base="\"$CATALINA_BASE\"" \
-Dcatalina.home="\"$CATALINA_HOME\"" \
-Djava.io.tmpdir="\"$CATALINA_TMPDIR\"" \
org.apache.catalina.startup.Bootstrap "$@" start \
>> "$CATALINA_OUT" 2>&1
fi
fi編寫dockerfile(基于上面的tomcat鏡像)
# 基礎鏡像 FROM tomcat:1.0 # 創建項目目錄和日志目錄，這個是要在宿主機-v掛載的 RUN set -x \ &&mkdir -p /Webs/logs \ \ &&rm -rf /usr/local/tomcat/logs \ \ &&ln -sf /Webs/logs /usr/local/tomcat/logs # 將啟動文件copy到容器 COPY start.sh /usr/local/tomcat/bin/ # 給容器的啟動腳本權限 RUN chmod +x /usr/local/tomcat/bin/start.sh # 開放8080端口 EXPOSE 8080 # 運行tomcat CMD ["start.sh","run"]
創建鏡像
[root@docker43 tomcat_web]# docker build -t tomcat_web:v1 .
查看鏡像
[root@docker43 tomcat_web]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE tomcat_web v1 b3651c50a7b5 26 seconds ago 124 MB tomcat 1.0 64c9cec4375d 6 minutes ago 124 MB alpine_jre latest 614bc57ab66e 14 minutes ago 91.1 MB docker.io/alpine latest 196d12cf6ab1 3 weeks ago 4.41 MB
3、創建容器
創建項目目錄
我們是基于tomcat_web鏡像進行創建容器的
首先我先在宿主機上創建個項目的目錄(server.xml的配置文件拷貝改路徑就能用)
[root@docker43 ~]# cd /home/ [root@docker43 home]# mkdir test.tomcat.com && cd test.tomcat.com [root@docker43 test.tomcat.com]# touch server.xml # 配置文件 [root@docker43 test.tomcat.com]# mkdir logs # 日志目錄 [root@docker43 test.tomcat.com]# mkdir wwwroot # 項目主目錄(要是修改了記得也在server.xml進行修改) [root@docker43 test.tomcat.com]# ll 總用量 0 drwxr-xr-x 2 root root 6 10月 6 18:03 logs -rw-r--r-- 1 root root 0 10月 6 18:02 server.xml drwxr-xr-x 2 root root 6 10月 6 18:03 wwwroot
server.xml配置文件
<?xml version='1.0' encoding='utf-8'?>
<Server port="8005" shutdown="SHUTDOWN">
<Listener className="org.apache.catalina.startup.VersionLoggerListener" />
<Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
<Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
<Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
<GlobalNamingResources>
<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml" />
</GlobalNamingResources>
<Service name="Catalina">
<Connector port="8080" protocol="org.apache.coyote.http11.Http11AprProtocol"
connectionTimeout="20000"
maxThreads="1000"
minSpareThreads="100"
redirectPort="8443" URIEncoding="UTF-8"/>
<Connector port="8009" maxThreads="1000" minSpareThreads="100" protocol="AJP/1.3" redirectPort="8443" />
<Engine name="Catalina" defaultHost="localhost">
<Realm className="org.apache.catalina.realm.LockOutRealm">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/>
</Realm>
<Host name="localhost" appBase="/Webs/wwwroot" unpackWARs="true" autoDeploy="true">
<Context path="" docBase="/Webs/wwwroot" reloadable="true" />
<Valve className="org.apache.catalina.valves.AccessLogValve"
directory="logs"
prefix="localhost__access_log"
suffix=".txt"
pattern="%{X-Real-IP}i %l %u %t "%r" %s %b" />
</Host>
</Engine>
</Service>
</Server>編寫測試頁面
在wwwroot中編寫個測試頁面
[root@docker43 test.tomcat.com]# cd wwwroot/ [root@docker43 wwwroot]# cat index.html
成功了
創建并啟動容器
復制代碼 代碼如下:
docker run -tid --restart=always --name test.tomcat.com -p 5081:8080 -v /home/test.tomcat.com/:/Webs -m 2048m --memory-swap=2048m --cpu-shares=256 tomcat_web:v1 start.sh run -config /Webs/server.xml
查看容器
[root@docker43 test.tomcat.com]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES ab62045e0688 tomcat_web:v1 "start.sh run -con..." 2 seconds ago Up 1 second 0.0.0.0:5081->8080/tcp test.tomcat.com
測試
[root@docker43 test.tomcat.com]# curl 127.0.0.1:5081 成功了 [root@docker43 test.tomcat.com]#
關于怎么在alpine中使用dockerfile創建tomcat鏡像問題的解答就分享到這里了，希望以上內容可以對大家有一定的幫助，如果你還有很多疑惑沒有解開，可以關注億速云行業資訊頻道了解更多相關知識。
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