创建 dockerfile

Dockerfile

PS: 文件名字必须是这样 Dockerfile

FROM tomcat:8.0
COPY index.jsp  /usr/local/tomcat/webapps/ROOT
EXPOSE 8080

index.jsp

<%
out.println("Hello World, V1");
%>

build 并测试

The docker build command processes this file generating a Docker Image in your Local Image Cache, which you can then start-up using the docker run command, or push to a permanent Image Repository.

docker build 创建一个 docker 镜像，这个镜像可以在你本地运行。

$docker build -t mytomcat:1.0 .

$docker run -p 8080:8080 -d mytomcat:1.0

$curl localhost:8080

push 到 docker hub

注册一个账号

Build image

Docker login

输入用户名、密码

Docker push

第一步：修改 tag 名称

// 必须先修改 tag 名称
docker tag firstimage YOUR_DOCKERHUB_NAME/firstimage

举例：docker tag mytomcat:1.0 preparedman/mytomcat:1.0

第二步：push

docker push YOUR_DOCKERHUB_NAME/firstimage

举例：docker push preparedman/mytomcat:1.0

Docker 测试

https://cloud.docker.com/u/preparedman/repository/docker/preparedman/mytomcat

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