integrate with pi-gen.

.github/workflows/image.yml

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+name: image
+
+on:
+  push:
+    branches:
+      - master
+      - ci
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+      - name: Check out repository
+        uses: actions/checkout@v2
+
+      - name: Build image
+        uses: usimd/pi-gen-action@v1
+        with:
+          # Compression to apply on final image (either "none", "zip", "xz" or "gz").
+          compression: zip
+
+          # Compression level to be used. From 0 to 9 (refer to the tool man page for more 
+          # information on this. Usually 0 is no compression but very fast, up to 9 with the 
+          # best compression but very slow).
+          compression-level: 6
+
+          # Disable the renaming of the first user during the first boot. This make it so 
+          # 'username' stays activated. 'username' must be set for this to work. Please be 
+          # aware of the implied security risk of defining a default username and password 
+          # for your devices.
+          disable-first-boot-user-rename: 1
+
+          # Additional options to include in PIGEN_DOCKER_OPTS
+          docker-opts: ''
+
+          # Set whether a NOOBS image should be built as well. If enabled, the output 
+          # directory containing the NOOBS files will be saved as output variable 
+          # 'image-noobs-path'.
+          enable-noobs: false
+
+          # Enable SSH access to Pi.
+          enable-ssh: 1
+
+          # If this feature is enabled, the action will configure pi-gen to not export any 
+          # stage as image but the last one defined in property 'stage-list'. This is 
+          # helpful when building a single image flavor (in contrast to building a 
+          # lite/server and full-blown desktop image), since it speeds up the build process 
+          # significantly.
+          export-last-stage-only: true
+
+          # Comma or whitespace separated list of additional packages to install on host 
+          # before running pi-gen. Use this list to add any packages your custom stages may 
+          # require. Note that this is not affecting the final image. In order to add 
+          # additional packages, you need to add a respective 'XX-packages' file in your 
+          # custom stage.
+          extra-host-dependencies: ''
+
+          # Comma or whitespace separated list of additional modules to load on host before 
+          # running pi-gen. If your custom stage requires additional software or kernel 
+          # modules to be loaded, add them here. Note that this is not meant to configure 
+          # modules to be loaded in the target image.
+          extra-host-modules: ''
+
+          # Token to use for checking out pi-gen repo.
+          github-token: ${{ github.token }}
+
+          # Host name of the image.
+          hostname: door
+
+          # Final image name.
+          image-name: "door-$(date -u '+%y%m%d%H%M')-${{steps.extract_branch.outputs.branch}}"
+
+          # Default keyboard keymap.
+          keyboard-keymap: us
+
+          # Default keyboard layout.
+          keyboard-layout: English (US)
+
+          # Default locale of the system image.
+          locale: en_US.UTF-8
+
+          # Password of the intial user account, locked if empty.
+          password: 'door'  # fixme
+
+          # Path where selected pi-gen ref will be checked out to. If the path does not yet 
+          # exist, it will be created (including its parents).
+          pi-gen-dir: pi-gen
+
+          # GitHub repository to fetch pi-gen from, must be a fork from RPi-Distro/pi-gen.
+          pi-gen-repository: RPi-Distro/pi-gen
+
+          # Release version of pi-gen to use. This can both be a branch or tag name known in 
+          # the pi-gen repository.
+          pi-gen-version: armv6
+
+          # The release version to build images against. Valid values are jessie, stretch, 
+          # buster, bullseye, and testing.
+          release: bullseye
+
+          # Setting to `1` will prevent pi-gen from dropping the "capabilities" feature. 
+          # Generating the root filesystem with capabilities enabled and running it from a 
+          # filesystem that does not support capabilities (like NFS) can cause issues. Only 
+          # enable this if you understand what it is.
+          setfcap: ''
+
+          # List of stage name to execute in given order. Relative and absolute paths to 
+          # custom stage directories are allowed here. Note that by default pi-gen exports 
+          # images in stage2 (lite), stage4 and stage5. You probably want to hook in custom 
+          # stages before one of the exported stages. Otherwise, the action will make sure 
+          # any custom stage will include an image export directive.
+          stage-list: stage0 stage1 stage2
+
+          # System timezone.
+          timezone: Asia/Hong_Kong
+
+          # Use qcow2 images to reduce space and runtime requirements.
+          use-qcow2: 1
+
+          # Name of the initial user account.
+          username: pi
+
+          # Print all output from pi-gen.
+          verbose-output: false
+
+          # Wifi country code of default network to connect to.
+          wpa-country: ''
+
+          # SSID of a default wifi network to connect to.
+          wpa-essid: ''
+
+          # Password of default wifi network to connect to.
+          wpa-password: ''