docker使用alpine系统构建tomcat8镜像

FROM frolvlad/alpine-oraclejdk8
#此镜像使用alpine-glibc系统，精简jdk,只运行java程序，无法编译/构建
MAINTAINER guilin 2019-2-27
ENV VERSION=8.5.38
ENV CATALINA_HOME /usr/local/tomcat
ENV PATH $CATALINA_HOME/bin:$PATH
ENV CATALINA_OPTS=" \
-Xms1g \
-Xmx1g  \
-Xss512k \
-Xmn500m \
-XX:MetaspaceSize=128m  \
-XX:MaxMetaspaceSize=512m \
-Xloggc:$CATALINA_HOME/logs/gc.log \
-XX:+PrintGCDetails  \
-XX:+PrintGCDateStamps \
-XX:+PrintPromotionFailure \
-XX:-UseBiasedLocking  \
-XX:AutoBoxCacheMax=20000 \ 
-XX:+AlwaysPreTouch  \
-Djava.security.egd=file:/dev/./urandom \
-XX:+ExplicitGCInvokesConcurrent  \
-XX:+ParallelRefProcEnabled  \
-XX:+UseConcMarkSweepGC  \
-XX:CMSInitiatingOccupancyFraction=75  \
-XX:+UseCMSInitiatingOccupancyOnly  \
-XX:-CMSClassUnloadingEnabled  \
-XX:+CMSScavengeBeforeRemark \
-XX:+HeapDumpOnOutOfMemoryError   \
-XX:HeapDumpPath=$CATALINA_HOME/logs  \
-XX:OnOutOfMemoryError=$CATALINA_HOME/bin/stop.sh  \
-XX:ErrorFile=$CATALINA_HOME/logs/hs_err_%p.log  \
-XX:+PrintCommandLineFlags  \
-XX:+PrintFlagsFinal  \
-XX:-OmitStackTraceInFastThrow \
-Duser.timezone=Asia/Shanghai  \
-Djavax.servlet.request.encoding=UTF-8 \
-Djavax.servlet.response.encoding=UTF-8 \
-Dfile.encoding=UTF-8 \
-Duser.country=CN \
-Duser.language=zh \
-Djava.awt.headless=true \
-Dcom.sun.management.jmxremote.port=1099  \
-Dcom.sun.management.jmxremote.ssl=false  \
-Dcom.sun.management.jmxremote.authenticate=false \
-Djava.rmi.server.hostname=www.tomcat.com"
RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
RUN apk add --no-cache --virtual=build-dependencies wget
RUN wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v${VERSION}/bin/apache-tomcat-${VERSION}.tar.gz \
&& tar zxf apache-tomcat-${VERSION}.tar.gz \
&& mv apache-tomcat-${VERSION} $CATALINA_HOME \
&& apk del build-dependencies \
&& rm -rf apache-tomcat-${VERSION}.tar.gz $CATALINA_HOME/webapps/* $CATALINA_HOME/bin/*.bat \
&& mkdir $CATALINA_HOME/webapps/ROOT \
# 处理Tomcat启动慢问题（随机数产生器初始化过慢）
&& sed -i "s#securerandom.source=file:/dev/random#securerandom.source=file:/dev/./urandom#g" $JAVA_HOME/jre/lib/security/java.security

WORKDIR $CATALINA_HOME
EXPOSE 8080
CMD ["catalina.sh", "run"]

构建镜像

[root@docker01 tomcat]# ll
total 4
-rw-r--r-- 1 root root 2245 Feb 27 10:31 Dockerfile
[root@docker01 tomcat]# docker build -t tomcat:v1.1 .

查看构建的镜像

[root@docker01 tomcat]# docker image ls

运行一下镜像

[root@docker01 tomcat]# docker run -d -p 8080:8080 tomcat:v1.1

此时可以使用8080端口来访问容器内提供的web服务，前提是需要在目录中布署代码。