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Docker for Web Developers

More on the Docker Compose File

Explore detailed Docker Compose file configurations covering volume mounting, port exposure, custom DNS servers, container linking, restart policies, healthchecks, and logging options. Understand how to enhance container control and service interaction in your Docker setups for web development projects.

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Attach persistent Docker volumes

Mount a Docker volume (created on first use) or bind a host directory:

  mycontainer:
    volumes:

      #Docker volume
      - type: volume
        source: rootfiles
        target: /var/www/html

      #bind host directory
      - type: bind
        source: ./myfiles
        target: /var/www/html/myfiles

A shorter syntax can also be used to define <source>:<destination>. The <source> is presumed to be Docker volume unless it starts with . or .. relative file paths.

  mycontainer:

    #idential to above
    volumes:
      - rootfiles:/var/www/html
      - ./myfiles:/var/www/html/myfiles

Docker volumes (and optional configurations) must be referenced after the services: definition at the bottom ...