Docker Development On Mac

This repo tries to solve some problematics related about development using Docker and in particular on Mac Os:

• It's common, when you develop multiple projects and you have to handle multiple docker configurations, figure out how map containers ports in order to solve port conflicts: i.e all applications using nginx has to use the same port 80. This problem is solved using a reverse proxy (Traefik) in front of all our containers.

• Docker for mac has known problems of filesystem performances, for this reasons using NFS seems to be a good workaround. This script want to centralise the NFS docker configuration in one point, in order to be always able to set up docker volumes for multiple project with NFS.

Used Technlogies:

• NFS
• Traefik v2.2

How use it

clone this repository:

git clone git@github.com:zioDocker/DockerDevelopmentOnMac.git {my-project}

NFS Configuration

Go in the folder configuration/etc/exports and add the path of the folders where your docker containers and related volumes will run.

NFS script

Start nfs script:

chmod +x nfs-start.sh
./nfs-start.sh

When the scripts ends, all the folders you mentioned in the configurations are ready to be used with volumes of type nfs3, here an example using docker-compose volume declaration:

volumes:
  my-volume:
    driver: local
    driver_opts:
      type: nfs
      device: ':${PWD}'
      o: addr=host.docker.internal,rw,nolock,hard,nointr,nfsvers=3

Volume options are the most important part in your volume declaration, please use the same of the example above

Reverse proxy (Traefik)

Run Traefik with the script:

chmod +x reverseProxy-start.sh
./reverseProxy-start.sh

This script create docker network named reverse-proxy that must be shared in the containers you want to be available on Traefik.

Now on http://localhost:8080 you can find Traefik dashboard where is possible to monitor all your running containers. Every time you spin up a new container, this is visible immediately on Traefik.

Inside your docker-compose file you need to add the network reverse-proxy:

networks:
  reverse-proxy:
      external: true

Remember to configure labels inside your docker-compose files for your containers, i.e.:

 web:
    image: 'magento/magento-cloud-docker-nginx:latest'
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.my-magento-web.rule=Host(`my-magento.local`)"
      - "traefik.http.routers.my-magento-web.entrypoints=web"
    volumes: *fpmVolumes
    networks:
      - reverse-proxy
      - my-containers-network

All containers, to be visible outside of Traefik, has to be part of the same Traefik network: reverse-proxy

All containers, of the same application(i.e. inside the same docker-compose file) has to share the same network to see each others.

Docker-compose examples

• magento2

Inspirations

• http://nfs.sourceforge.net/
• This scipt is inspired from this gist repo and is resuming the solution coming from this discussion
• https://www.tecmint.com/how-to-setup-nfs-server-in-linux/
• https://docs.docker.com/engine/reference/commandline/volume_create/