Docker deploys the springboot project as an external directory

Pre-preparation:

list:

• Linux with docker installed
• The jar file packaged by springboot (this project has only one return "hello world" interface)

Linux IP address: 192.168.221.129

The interface of the springboot project:

1. Upload the jar file to Linux

The location I uploaded is: /root/dockerJar, as follows:

2. Docker downloads the jdk8 image

docker pull java:8

View images using docker images :

 

3. Deploy the project by mounting the directory

Principle: When we run the jdk image, we mount the jar file in Linux to the image, and as the image runs, the project is also executed

 Excuting an order:

docker run -d -p 8080:8080 --name helloworld-2 -v /root/dockerJar/helloworld-0.0.1-SNAPSHOT.jar:/root/app.jar java:8 java -jar /root/app.jar

explain:

docker run: the command to run the image

-d: Indicates the way to start and run in the background

helloworld-2: Indicates the name of the container generated after the image is run

-p 8080:8080: Mapping the 8080 port of the Linux host to communicate with the 8080 port in the docker container

-v /root/dockerJar/helloworld-0.0.1-SNAPSHOT.jar:/root/app.jar: -v indicates that the directory is mounted, which means that /root/dockerJar/helloworld-0.0.1-SNAPSHOT.jar outside Linux The file, corresponding to /root/app.jar in the docker container, is regarded as the same file

java:8: The name of the image we downloaded

java -jar /root/app.jar: Indicates the command executed in docker, which is used to start the jar program

After the execution is completed, it is as follows:

4. Access the project

Note: You need to close the Linux firewall or open port 8080, otherwise the access will fail

Open firewall:

systemctl stop firewalld

 Use a browser to access:

http://192.168.221.129:8080/test

The result is as follows: