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Docker Test-Environment

Having to re-flash the sd card of their raspberry pi did annoy ZyanKLee that much he created this little set of tools to allow testing without flashing.

This is a work in progress so expect things to fail or being flaky.

Howto

  • First you need a raspberry pi with some decent performance (RPi 3 or 4 would be recommended)
  • Flash its sd card with raspbian buster lite
  • use raspi-config to resize the filesystem to the whole sd card (menu: 7 -> A1)
  • install some tools and reboot:
      sudo apt-get update
      sudo apt-get -y dist-upgrade
      sudo apt-get -y install docker.io git
      sudo gpasswd -a pi docker
      sudo reboot
  • login to your RPi
  • clone this repo and cd into its local clone:
      git clone https://github.com/MiczFlor/RPi-Jukebox-RFID.git
      cd /home/pi/RPi-Jukebox-RFID/

  • build the docker image:

    • on normal PCs:

      docker build -t rpi-jukebox-rfid-stretch:latest -f ci/Dockerfile.stretch.amd64 .
docker build -t rpi-jukebox-rfid-buster:latest -f ci/Dockerfile.buster.amd64 .

    • on a raspberry pi:

      docker build -t rpi-jukebox-rfid-stretch:latest -f ci/Dockerfile.stretch.armv7 .
docker build -t rpi-jukebox-rfid-buster:latest -f ci/Dockerfile.buster.armv7 .

  • get something to drink or eat

  • run the freshly built docker image and start testing. For example:

      docker run --rm -ti rpi-jukebox-rfid-buster:latest /bin/bash
  cd /home/pi/
  cp /code/scripts/installscripts/buster-install-default.sh /home/pi/
  bash buster-install-default.sh

    NOTE: Get familiar with docker and its flags - --rm for example will remove the container after you log out of it and all changes will be lost.

mount hosts code as volume

The created image now contains all the code in the directory /code - if you do not want to rebuild the image after each code-change you can 'mount' the RPi's code version into the container:

    git clone https://github.com/MiczFlor/RPi-Jukebox-RFID.git
    cd /home/pi/RPi-Jukebox-RFID/
    docker build -t rpi-jukebox-rfid-buster:latest -f ci/Dockerfile .
    docker run --rm -ti -w /code -v $PWD:/code rpi-jukebox-rfid-buster:latest /bin/bash

    cd /home/pi/
    cp /code/scripts/installscripts/buster-install-default.sh /home/pi/
    bash buster-install-default.sh

In that way every change to the code in the container will be available on the RPi as well as vice versa.