[docker] dockerfile publishes springboot project

1. Implementation steps

• 1. Define the parent image: FROM java:8
• 2. Define author information: MAINTAINER: learn_docker<https://www.docker.com>
• 3. Add the jar package to the container: ADD jar package name.jar app.jar
• 4. Define the container to start the execution command: CMD java -jar app.jar
• 5. Build the image through dockerfile: docker build -f dockerfile file path -t image name: version

Two, examples

• 1. Upload a jar package to the directory
  

• 2. Edit the dockerfile in the same directory

vim springboot_dockerfile

输入内容：
FROM java:8
MAINTAINER wangyouhui <https://www.docker.com>
ADD springboot-1.0-SNAPSHOT.jar app.jar
CMD java -jar app.jar

• 3. Execute the build command

docker build -f ./springboot_dockerfile -t app .

• 4.docker images view
  
• 5.docker run run

docker run -id -p 8080:8080 app

• 6. Screenshot of the result
  

• 7. View the container

docker ps -a