To use Docker, all is already configured via code in its 'Dockerfile', so you only need to tell Docker to use it.
For simplicity, the current webapp name here is 'test-webapp'.
Note that by default no user is able to run Docker commands without 'sudo', unless it is in the 'docker' group.
- to build the image:
docker build -t test-webapp . - to inspect image (for check contents, etc):
docker exec -it test-webapp /bin/bash - to install dependencies (if not already installed during the build):
docker run -t test-webapp npm install - to install dependencies (if not already installed during the build) for production environment:
docker run -t test-webapp npm install --only=production
- to run the image (normal):
docker run -p 8080:8000 test-webapp - to run the image (detached):
docker run -d -p 8080:8000 test-webapp - to run the image (detached and a name for the instance 1 and related port, example):
docker run -d -p 8001:8000 test-webapp --name test-webapp-1 test-webapp- and then get container ID:
docker ps - and get its logs:
docker logs <container id>
- and then get container ID:
- to run the image (normal) via npm command start (in this case the process will stay active, so I need to stop later):
docker run -p 8080:8000 -t test-webapp bash -c "npm start" - to run the image (normal) via npm command:
docker run -p 8080:8000 -t test-webapp bash -c "npm test" - to run the image (detached) via npm command start (in this case the process will stay active in background, so I need to stop later):
docker run -d -p 8080:8000 -t test-webapp bash -c "npm start"- and then I could get its logs with (requires its id):
docker logs <container id> - or to display all or only latest n lines, for example:
docker logs <container id> --tail="all"
- and then I could get its logs with (requires its id):
- to enter in the container (for check contents, etc, but attention to entry point if set):
docker run -it test-webapp bash - to enter in the container (for check contents, etc, but attention to entry point if set):
docker exec -it <container id> /bin/bash - to check the container works, for example:
curl -i http://localhost:8080
- to stop the container, for example:
docker stop <container id> - to cleanup all images, containers, etc:
docker system prune --all