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      Docker 安装 Tomcat

      方法一、docker pull tomcat

      查找 Docker Hub 上的 tomcat 镜像

      axihe@axihe:~/tomcat$ docker search tomcat
      NAME                       DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
      tomcat                     Apache Tomcat is an open source implementa...   744       [OK]
      dordoka/tomcat             Ubuntu 14.04, Oracle JDK 8 and Tomcat 8 ba...   19                   [OK]
      consol/tomcat-7.0          Tomcat 7.0.57, 8080, "admin/admin"              16                   [OK]
      consol/tomcat-8.0          Tomcat 8.0.15, 8080, "admin/admin"              14                   [OK]
      cloudesire/tomcat          Tomcat server, 6/7/8                            8                    [OK]
      davidcaste/alpine-tomcat   Apache Tomcat 7/8 using Oracle Java 7/8 wi...   6                    [OK]
      andreptb/tomcat            Debian Jessie based image with Apache Tomc...   4                    [OK]
      kieker/tomcat                                                              2                    [OK]
      fbrx/tomcat                Minimal Tomcat image based on Alpine Linux      2                    [OK]
      jtech/tomcat               Latest Tomcat production distribution on l...   1                    [OK]
      
      

      这里我们拉取官方的镜像

      axihe@axihe:~/tomcat$ docker pull tomcat
      

      等待下载完成后,我们就可以在本地镜像列表里查到 REPOSITORY 为 tomcat 的镜像。

      axihe@axihe:~/tomcat$ docker images|grep tomcat
      tomcat              latest              70f819d3d2d9        7 days ago          335.8 MB
      
      

      方法二、通过 Dockerfile 构建

      创建 Dockerfile

      首先,创建目录 tomcat, 用于存放后面的相关东西。

      axihe@axihe:~$ mkdir -p ~/tomcat/webapps ~/tomcat/logs ~/tomcat/conf
      

      webapps 目录将映射为 tomcat 容器配置的应用程序目录

      logs 目录将映射为 tomcat 容器的日志目录

      conf 目录里的配置文件将映射为 tomcat 容器的配置文件

      进入创建的 tomcat 目录,创建 Dockerfile

      FROM openjdk:8-jre
      
      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
      
      # runtime dependencies for Tomcat Native Libraries
      # Tomcat Native 1.2+ requires a newer version of OpenSSL than debian:jessie has available
      # > checking OpenSSL library version >= 1.0.2...
      # > configure: error: Your version of OpenSSL is not compatible with this version of tcnative
      # see http://tomcat.10.x6.nabble.com/VOTE-Release-Apache-Tomcat-8-0-32-tp5046007p5046024.html (and following discussion)
      # and https://github.com/docker-library/tomcat/pull/31
      ENV OPENSSL_VERSION 1.1.0f-3+deb9u2
      RUN set -ex; \
          currentVersion="$(dpkg-query --show --showformat '${Version}\n' openssl)"; \
          if dpkg --compare-versions "$currentVersion" '<<' "$OPENSSL_VERSION"; then \
              if ! grep -q stretch /etc/apt/sources.list; then \
      # only add stretch if we're not already building from within stretch
                  { \
                      echo 'deb http://deb.debian.org/debian stretch main'; \
                      echo 'deb http://security.debian.org stretch/updates main'; \
                      echo 'deb http://deb.debian.org/debian stretch-updates main'; \
                  } > /etc/apt/sources.list.d/stretch.list; \
                  { \
      # add a negative "Pin-Priority" so that we never ever get packages from stretch unless we explicitly request them
                      echo 'Package: *'; \
                      echo 'Pin: release n=stretch*'; \
                      echo 'Pin-Priority: -10'; \
                      echo; \
      # ... except OpenSSL, which is the reason we're here
                      echo 'Package: openssl libssl*'; \
                      echo "Pin: version $OPENSSL_VERSION"; \
                      echo 'Pin-Priority: 990'; \
                  } > /etc/apt/preferences.d/stretch-openssl; \
              fi; \
              apt-get update; \
              apt-get install -y --no-install-recommends openssl="$OPENSSL_VERSION"; \
              rm -rf /var/lib/apt/lists/*; \
          fi
      
      RUN apt-get update && apt-get install -y --no-install-recommends \
              libapr1 \
          && rm -rf /var/lib/apt/lists/*
      
      # see https://www.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
      
      ENV TOMCAT_MAJOR 8
      ENV TOMCAT_VERSION 8.5.32
      ENV TOMCAT_SHA512 fc010f4643cb9996cad3812594190564d0a30be717f659110211414faf8063c61fad1f18134154084ad3ddfbbbdb352fa6686a28fbb6402d3207d4e0a88fa9ce
      
      ENV TOMCAT_TGZ_URLS \
      # https://issues.apache.org/jira/browse/INFRA-8753?focusedCommentId=14735394#comment-14735394
          https://www.apache.org/dyn/closer.cgi?action=download&filename=tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz \
      # if the version is outdated, we might have to pull from the dist/archive :/
          https://www-us.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz \
          https://www.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz \
          https://archive.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz
      
      ENV TOMCAT_ASC_URLS \
          https://www.apache.org/dyn/closer.cgi?action=download&filename=tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz.asc \
      # not all the mirrors actually carry the .asc files :'(
          https://www-us.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz.asc \
          https://www.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz.asc \
          https://archive.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz.asc
      
      RUN set -eux; \
          \
          savedAptMark="$(apt-mark showmanual)"; \
          apt-get update; \
          \
          apt-get install -y --no-install-recommends gnupg dirmngr; \
          \
          export GNUPGHOME="$(mktemp -d)"; \
          for key in $GPG_KEYS; do \
              gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
          done; \
          \
          apt-get install -y --no-install-recommends wget ca-certificates; \
          \
          success=; \
          for url in $TOMCAT_TGZ_URLS; do \
              if wget -O tomcat.tar.gz "$url"; then \
                  success=1; \
                  break; \
              fi; \
          done; \
          [ -n "$success" ]; \
          \
          echo "$TOMCAT_SHA512 *tomcat.tar.gz" | sha512sum -c -; \
          \
          success=; \
          for url in $TOMCAT_ASC_URLS; do \
              if wget -O tomcat.tar.gz.asc "$url"; then \
                  success=1; \
                  break; \
              fi; \
          done; \
          [ -n "$success" ]; \
          \
          gpg --batch --verify tomcat.tar.gz.asc tomcat.tar.gz; \
          tar -xvf tomcat.tar.gz --strip-components=1; \
          rm bin/*.bat; \
          rm tomcat.tar.gz*; \
          rm -rf "$GNUPGHOME"; \
          \
          nativeBuildDir="$(mktemp -d)"; \
          tar -xvf bin/tomcat-native.tar.gz -C "$nativeBuildDir" --strip-components=1; \
          apt-get install -y --no-install-recommends \
              dpkg-dev \
              gcc \
              libapr1-dev \
              libssl-dev \
              make \
              "openjdk-${JAVA_VERSION%%[.~bu-]*}-jdk=$JAVA_DEBIAN_VERSION" \
          ; \
          ( \
              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 "$(nproc)"; \
              make install; \
          ); \
          rm -rf "$nativeBuildDir"; \
          rm bin/tomcat-native.tar.gz; \
          \
      # reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
          apt-mark auto '.*' > /dev/null; \
          [ -z "$savedAptMark" ] || apt-mark manual $savedAptMark; \
          apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
          rm -rf /var/lib/apt/lists/*; \
          \
      # sh removes env vars it doesn't support (ones with periods)
      # https://github.com/docker-library/tomcat/issues/77
          find ./bin/ -name '*.sh' -exec sed -ri 's|^#!/bin/sh$|#!/usr/bin/env bash|' '{}' +
      
      # 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
      
      EXPOSE 8080
      CMD ["catalina.sh", "run"]
      
      

      通过 Dockerfile 创建一个镜像,替换成你自己的名字

      axihe@axihe:~/tomcat$ docker build -t tomcat .
      

      创建完成后,我们可以在本地的镜像列表里查找到刚刚创建的镜像

      axihe@axihe:~/tomcat$ docker images|grep tomcat
      tomcat              latest              70f819d3d2d9        7 days ago          335.8 MB
      
      

      使用 tomcat 镜像

      运行容器

      axihe@axihe:~/tomcat$ docker run --name tomcat -p 8080:8080 -v $PWD/test:/usr/local/tomcat/webapps/test -d tomcat
      acb33fcb4beb8d7f1ebace6f50f5fc204b1dbe9d524881267aa715c61cf75320
      axihe@axihe:~/tomcat$
      

      命令说明:

      **-p 8080:8080:**将容器的 8080 端口映射到主机的 8080 端口

      **-v $PWD/test:/usr/local/tomcat/webapps/test:**将主机中当前目录下的 test 挂载到容器的 /test

      查看容器启动情况

      axihe@axihe:~/tomcat$ docker ps
      CONTAINER ID    IMAGE     COMMAND               ... PORTS                    NAMES
      acb33fcb4beb    tomcat    "catalina.sh run"     ... 0.0.0.0:8080->8080/tcp   tomcat
      
      

      通过浏览器访问

      扩展阅读

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