felipefreitassilvalearning / docker_101 Goto Github PK

This repository contains a simple example of how to use Docker to create a website that uses a database and an API. It was based on the Docker em 22 minutos - teoria e prática video from Ayrton Teshima - Programador a Bordo channel.

• Useful Docker commands
• Important parameters
• Windows vs Linux
• Project specific observations

Create images

  docker build -t <image_name> .

List images

  docker images

Create containers

  docker run -d -v <absolute_path_to_file>:<container_path> --link another-container-name -p <host_port>:<container_port> --name <container_name> <image_name>

List containers

  docker ps

Access containers

  docker exec -it <container_name> bash

Stop containers

  docker stop <container_name>

• -d = detached mode (run in background, not blocking terminal)
• -f = file (dockerfile path)
• -t = tag (name of the image)
• -i = interactive mode (keep STDIN open even if not attached)
• -it = interactive mode + allocate a pseudo-TTY (terminal)
• -p = port (host_port:container_port)
• -v = volume (host_path:container_path)
• --link = link containers (container_name:alias)
• --name = name of the container
• --rm = remove container after stop

• Windows

  • %cd% = current path
  • \ = folder separator

• Linux

  • $(pwd) = current path
  • / = folder separator

• Go through the README.md files in the project folders in this order:

  • 1. api/db
  • 2. api
  • 3. website

• The order is important because the containers are linked and the database must be up and running before the api container starts

• The website container is not linked to any other container, so it can be started at any time

• The api container is linked to the database container, so it must be started after the database container