1、下载alpine镜像
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[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、通过dockerfile构建镜像
在其他的资料中很多都是下载包然后在dockerfile 使用COPY进行拷贝，这里我就不这样做了，我们分开写(都是通过dockerfile进行构建镜像)
2.1.构建jdk镜像
创建jdk目录
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[root@docker43 ~]# cd /opt/
[root@docker43 opt]# mkdir -p alpine_jre && cd alpine_jre && touch Dockerfile
[root@docker43 alpine_jre]# ll
总用量 0
-rw-r--r-- 1 root root 0 10月 6 17:39 Dockerfile |
编写dockerfile文件
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# 基础镜像
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
# 安装需要的软件
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
# 定义环境变量
ENV PATH /usr/local/bin:${PATH}
# 安装JRE
RUN apk add --nocache openjdk8-jre-base && \\
rm -rf /var/cache/apk/*
RUN { \\
echo '#!/bin/sh'; \\
echo 'set -e'; \\
echo; \\
echo 'dirname "$(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" |
创建镜像
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[root@docker43 alpine_jre]# docker build -t alpine_jre . |
查看镜像
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[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.构建tomcat镜像
创建tomcat目录
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[root@docker43 ~]# cd /opt/
[root@docker43 opt]# mkdir -p jre_tomcat && cd jre_tomcat && touch Dockerfile
[root@docker43 jre_tomcat]# ll
总用量 0
-rw-r--r-- 1 root root 0 10月 6 17:46 Dockerfile |
编写dockerfile(基于上面的alpine_jre镜像)
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#基础镜像
FROM alpine_jre
# 作者信息
MAINTAINER tomcat Docker Maintainers "1024331014@qq.com"
# 定义tomcat变量(如果有其他的可以在这里加)
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
# 定义tomcat版本
ENV TOMCAT_MAJOR 8
ENV TOMCAT_VERSION 8.0.53
# 下载
# 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
# 安装
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
# 开发8080端口
EXPOSE 8080
# 执行命令
CMD ["catalina.sh", "run"] |
创建镜像
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[root@docker43 jre_tomcat]# docker build -t tomcat:1.0 . |
查看镜像
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[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.构建tomcat_web镜像
创建tomcat_web目录(包含Dockerfile和启动文件)
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[root@docker43 ~]# cd /opt/
[root@docker43 opt]# mkdir tomcat_web && cd tomcat_web && touch Dockerfile && touch start.sh
[root@docker43 tomcat_web]# ll
总用量 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 |
编写start.sh启动脚本
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