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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

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