Docker

Useful commands

• docker compose build

  • Description: Builds or rebuilds services defined in a docker-compose.yml file. It does not start the containers after building them.

• docker compose up -d

  • Description: Starts the containers in detached mode, allowing you to continue using the terminal.
  • Flags:
  • -d: Detached mode.

• docker compose -f docker-compose.dev.yml up --build -d

  • Description: Uses a custom Docker compose file to start the containers, forcing a build of the images before starting, in detached mode.
  • Flags:
  • -f: Specifies a custom file (in this case, docker-compose.dev.yml).
  • --build: Forces a build of the images.
  • -d: Detached mode.

• docker compose down -v

  • Description: Stops and removes containers, networks, and the default network associated with the composition. Additionally, removes the volumes.
  • Flags:
    • -v: Removes the volumes.

• docker compose -f docker-compose.dev.yml down -v

  • Description: Stops and removes containers, networks, and volumes specified in a custom Docker compose file.
  • Flags:
  • -f: Specifies a custom file (docker-compose.dev.yml).
  • -v: Removes the volumes.

• docker exec -it django-dev bash

  • Description: Executes an interactive bash shell inside the running container named django-dev.
  • Flags:
    • -it: Interactive terminal.

• docker build . -t api

  • Description: Builds a Docker image from the Dockerfile in the current directory, tagging it as api.
  • Flags:
    • -t: Tag the image.

• docker run -p 8000:8000 -e DJANGO_SECRET_KEY=$DJANGO_SECRET_KEY api

  • Description: Runs a container from the api image, exposing port 8000 and setting the DJANGO_SECRET_KEY environment variable.
  • Flags:
    • -p 8000:8000: Maps port 8000 of the container to port 8000 on the host.
    • -e DJANGO_SECRET_KEY=$DJANGO_SECRET_KEY: Sets an environment variable inside the container.

• docker image prune

  • Description Removes dangling images.