Docker 安裝 Tomcat

方法一、docker pull tomcat

查找 Docker Hub上的 Tomcat 鏡像:

可以通過 Sort by 查看其他版本的 tomcat，默認是最新版本 tomcat:latest，

此外，我們還可以在控制臺使用 docker search tomcat 命令來查看可用版本：

runoob@runoob:~/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]

這里我們拉取官方的鏡像：

runoob@runoob:~/tomcat$ docker pull tomcat

等待下載完成后，我們就可以在本地鏡像串列里查到 REPOSITORY 為 tomcat 的鏡像，

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

方法二、通過 Dockerfile 構建

創建Dockerfile

首先，創建目錄tomcat,用于存放后面的相關東西，

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

webapps 目錄將映射為 tomcat 容器配置的應用程式目錄，

logs 目錄將映射為 tomcat 容器的日志目錄，

conf 目錄里的組態檔將映射為 tomcat 容器的組態檔，

進入創建的 tomcat 目錄，創建 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 isolatedENV TOMCAT_NATIVE_LIBDIR $CATALINA_HOME/native-jni-lib
ENV LD_LIBRARY_PATH ${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}$TOMCAT_NATIVE_LIBDIR# runtime dependencies for Tomcat Native Libraries# Tomcat Native 1.2+ requires a newer version of OpenSSL than debian:jessie has available# > checking OpenSSL library version >= 1.0.2...# > configure: error: Your version of OpenSSL is not compatible with this version of tcnative# see (and following discussion)# and 
RUN set -ex; \
    currentVersion="$(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 \
                echo 'deb http://security.debian.org stretch/updates main'; \
                echo 'deb \
            } > /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 
# see also "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
    \
# if the version is outdated, we might have to pull from the dist/archive :/
    \
    \
    
ENV TOMCAT_ASC_URLS \
    \
# not all the mirrors actually carry the .asc files :'(
    \
    \
    .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 $savedAptMark; \
    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
    rm -rf /var/lib/apt/lists/*; \
    \
# sh removes env vars it doesn't support (ones with periods)
# 
    find ./bin/ -name '*.sh' -exec sed -ri 's|^#!/bin/sh$|#!/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"]

通過 Dockerfile 創建一個鏡像，替換成你自己的名字：

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

創建完成后，我們可以在本地的鏡像串列里查找到剛剛創建的鏡像：

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

使用 tomcat 鏡像

運行容器

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

命令說明：

-p 8080:8080：將主機的 8080 埠映射到容器的 8080 埠，

-v $PWD/test:/usr/local/tomcat/webapps/test：將主機中當前目錄下的 test 掛載到容器的 /test，

查看容器啟動情況

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

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