方法一、docker pull tomcat

查找Docker Hub上的tomcat镜像

docker search tomcat

拉取官方的镜像

'''[root@izbp1jdwfzdvn1cy1xbz 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。

'''

[root@izbp1jdwfzdvn1q6ccy1xbz tomcat]# docker images|grep tomcat

docker.io/tomcat                                             8                     dd6ff929584a          2 months ago        463 MB

docker.io/tomcat                                             latest              dd6ff929584a           2 months ago        463 MB

docker.io/grange74/centos6-java6-tomcat6   latest               481203b6b87d        4 years ago           347 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。

'''[root@izbp1jdwfzdvn1q6ccy1xbz tomcat]#  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 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 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/31ENV 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

'''[root@izbp1jdwfzdvn1q6ccy1xbz 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

'''[root@izbp1jdwfzdvn1q6ccy1xbz tomcat]# docker images|grep tomcat'''

使用tomcat镜像

运行容器

'''[root@izbp1jdwfzdvn1q6ccy1xbz tomcat]# docker run --name tomcat -p 8080:8080 -v $PWD/test:/usr/local/tomcat/webapps/test -d tomcat  dd6ff929584a '''