Docker.commands.md

Docker commands

The project uses a docker container for each micro-service.

Using scripts to build and run the docker container

Must be run from the root of the project.

Building the container image

Each time the apps improves with new bugs fixed (patch) or new funtionality added (minor) a new version must be realeased increasing the semantic version with the command:

npm version patch # for bugs fixed
npm version minor # for new features added 

Then a new building is needed to create the container image to deployment or to share it with other developers using the command:

npm run build.docker # creates a new image tagged with latest version 

Using the Dockerfile all the modules in package.json will be installed. All files will be copied inside the container in the folder /home/nodejs/app. The new image has the name of the package and is tagged with version of the package and the latest tag. Then is pushed to [https://hub.docker.com/r/miguelsansegundo/iglu](Docker hub repo).

Running the container

The development environment will be started trough the container running on it the npm start command. All the code is editable from the host because is mounted to be read from the container. The node_modules folder is also mounted from the container to enable the edition from the host. In development mode more npm modules could be installed from the host.

sh scripts/run.docker.sh

Access the container command line

docker exec -it iglu.node.dev.env /bin/bash

List containers

docker ps -a

Show images

docker images

Remove containers

docker rm <id>

Remove images

docker rmi -f <id|name>

Print app output

docker logs <id|name>