Docker 安装 Tomcat - 《Docker》

方法一、通过 Dockerfile构建
方法二、docker pull tomcat
使用tomcat镜像
- 运行容器

方法一、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。

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 java:8-jre
ENV CATALINA_HOME /usr/local/tomcat
ENV PATH $CATALINA_HOME/bin:$PATH
RUN mkdir -p "$CATALINA_HOME"WORKDIR $CATALINA_HOME# runtime dependencies for Tomcat Native Libraries# Tomcat Native 1.2+ requires a newer version of OpenSSL than debian:jessie has available (1.0.2g+)# see http://tomcat.10.x6.nabble.com/VOTE-Release-Apache-Tomcat-8-0-32-tp5046007p5046024.html (and following discussion)ENV OPENSSL_VERSION 1.0.2h-1RUN { \
                echo 'deb http://httpredir.debian.org/debian unstable main'; \        } > /etc/apt/sources.list.d/unstable.list \        && { \# add a negative "Pin-Priority" so that we never ever get packages from unstable unless we explicitly request them
                echo 'Package: *'; \
                echo 'Pin: release a=unstable'; \
                echo 'Pin-Priority: -10'; \
                echo; \# except OpenSSL, which is the reason we're here
                echo 'Package: openssl libssl*'; \
                echo "Pin: version $OPENSSL_VERSION"; \
                echo 'Pin-Priority: 990'; \        } > /etc/apt/preferences.d/unstable-openssl
RUN apt-get update && apt-get install -y --no-install-recommends \
                libapr1 \
                openssl="$OPENSSL_VERSION" \        && rm -rf /var/lib/apt/lists/*
# see https://www.apache.org/dist/tomcat/tomcat-8/KEYS
RUN set -ex \
        && for key in \
                05AB33110949707C93A279E3D3EFE6B686867BA6 \
                07E48665A34DCAFAE522E5E6266191C37C037D42 \
                47309207D818FFD8DCD3F83F1931D684307A10A5 \
                541FBE7D8F78B25E055DDEE13C370389288584E7 \
                61B832AC2F1C5A90F0F9B00A1C506407564C17A3 \
                79F7026C690BAA50B92CD8B66A3AD3F4F22C4FED \
                9BA44C2621385CB966EBA586F72C284D731FABEE \
                A27677289986DB50844682F8ACB77FC2E86E29AC \
                A9C5DF4D22E99998D9875A5110C01C5A2F6059E7 \
                DCFD35E0BF8CA7344752DE8B6FB21E8933C60243 \
                F3A04C595DB5B6A5F1ECA43E3B7BBB100D811BBE \
                F7DA48BB64BCB84ECBA7EE6935CD23C10D498E23 \
        ; do \
                gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
        done
ENV TOMCAT_MAJOR 8
ENV TOMCAT_VERSION 8.0.35
ENV TOMCAT_TGZ_URL https://www.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz
RUN set -x \
  \
          && curl -fSL "$TOMCAT_TGZ_URL" -o tomcat.tar.gz \
          && curl -fSL "$TOMCAT_TGZ_URL.asc" -o tomcat.tar.gz.asc \
          && 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 \
          && nativeBuildDeps=" \
                  gcc \
                  libapr1-dev \
                  libssl-dev \
                  make \
                  openjdk-${JAVA_VERSION%%[-~bu]*}-jdk=$JAVA_DEBIAN_VERSION \
          " \
          && apt-get update && apt-get install -y --no-install-recommends $nativeBuildDeps && rm -rf /var/lib/apt/lists/* \
          && ( \
          export CATALINA_HOME="$PWD" \
                && cd "$nativeBuildDir/native" \
                && ./configure \
                        --libdir=/usr/lib/jni \
                        --prefix="$CATALINA_HOME" \
                        --with-apr=/usr/bin/apr-1-config \
                        --with-java-home="$(docker-java-home)" \
                        --with-ssl=yes \
                && make -j$(nproc) \
                && make install \
        ) \
        && apt-get purge -y --auto-remove $nativeBuildDeps \
        && rm -rf "$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
EXPOSE 8080
CMD ["catalina.sh", "run"]

通过Dockerfile创建一个镜像，替换成自己的名字

docker build -t tomcat .

创建完成后，可以在本地镜像列表中查找刚刚创建的镜像

docker images | grep tomcat

方法二、docker pull tomcat

查找Docker Hub上的tomcat镜像

docker search tomcat

这里我们拉取官方的镜像

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。

使用tomcat镜像

运行容器

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

docker ps

通过浏览器访问