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。
w3cschool@w3cschool:~$ 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-1
run { \
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 "$nativelines"; \
exit 1; \
fi
expose 8080
cmd ["catalina.sh", "run"]
通过dockerfile创建一个镜像，替换成你自己的名字
w3cschool@w3cschool:~/tomcat$ 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
w3cschool@w3cschool:~/tomcat$ docker images|grep tomcat tomcat latest 70f819d3d2d9 7 days ago 335.8 mb
方法二、docker pull tomcat
查找docker hub上的tomcat镜像
w3cschool@w3cschool:~/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
w3cschool@w3cschool:~/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。
使用tomcat镜像
运行容器
w3cschool@w3cschool:~/tomcat$ docker run --name tomcat -p 8080:8080 -v $pwd/test:/usr/local/tomcat/webapps/test -d tomcat acb33fcb4beb8d7f1ebace6f50f5fc204b1dbe9d524881267aa715c61cf75320 w3cschool@w3cschool:~/tomcat$
命令说明：
-p 8080:8080：将容器的8080端口映射到主机的8080端口
-v $pwd/test:/usr/local/tomcat/webapps/test：将主机中当前目录下的test挂载到容器的/test
查看容器启动情况
w3cschool@w3cschool:~/tomcat$ 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
