Dockerfile构建Tomcat镜像

  步骤：

  （1）创建一个目录，把构建Tomcat的Dockerfile文件保存到此目录。

mkdir tomcat8
cd tomcat6

  文件内容

FROM centos:7
MAINTAINER xpx
RUN sed -i 's|mirrorlist=|#mirrorlist=|g' /etc/yum.repos.d/CentOS-*.repo \
    && sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://mirrors.aliyun.com|g' /etc/yum.repos.d/CentOS-*.repo \
    && yum clean all \
    && yum makecache
RUN yum install wget -y
ADD jdk-8u92-linux-x64.rpm /usr/local/
ADD apache-tomcat-8.0.26.tar.gz /usr/local/
RUN cd /usr/local && rpm -ivh jdk-8u92-linux-x64.rpm
RUN mv /usr/local/apache-tomcat-8.0.26 /usr/local/tomcat8
EXPOSE 8080

构建过程

[root@localhost tomcat8]# docker build -t="tomcat8:v1" .
[+] Building 39.7s (12/12) FINISHED                                                                                   docker:default
 => [internal] load build definition from dockerfile                                                                            0.0s
 => => transferring dockerfile: 591B                                                                                            0.0s
 => [internal] load metadata for docker.io/library/centos:7                                                                    15.2s
 => [internal] load .dockerignore                                                                                               0.0s
 => => transferring context: 2B                                                                                                 0.0s
 => [1/7] FROM docker.io/library/centos:7@sha256:9d4bcbbb213dfd745b58be38b13b996ebb5ac315fe75711bd618426a630e0987               0.0s
 => [internal] load build context                                                                                               0.0s
 => => transferring context: 201B                                                                                               0.0s
 => CACHED [2/7] RUN sed -i 's|mirrorlist=|#mirrorlist=|g' /etc/yum.repos.d/CentOS-*.repo     && sed -i 's|#baseurl=http://mir  0.0s
 => CACHED [3/7] RUN yum install wget -y                                                                                        0.0s
 => CACHED [4/7] ADD jdk-8u92-linux-x64.rpm /usr/local/                                                                         0.0s
 => CACHED [5/7] ADD apache-tomcat-8.0.26.tar.gz /usr/local/                                                                    0.0s
 => [6/7] RUN cd /usr/local && rpm -ivh jdk-8u92-linux-x64.rpm                                                                 13.0s
 => [7/7] RUN mv /usr/local/apache-tomcat-8.0.26 /usr/local/tomcat8                                                             2.0s
 => exporting to image                                                                                                          9.3s 
 => => exporting layers                                                                                                         9.3s 
 => => writing image sha256:e86437e541f3f067123ca6a684e827551f42cca6ce4ae8cf206a49ebf3967fd1                                    0.0s 
 => => naming to docker.io/library/tomcat8:v1

查看镜像

[root@localhost tomcat8]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED              SIZE
tomcat8      v1        e86437e541f3   About a minute ago   1.51GB
xpx/nginx    v1        6a153d823f9b   20 hours ago         1.51GB