Actions: Move all Linux packaging into subdir (#7332)

.github/workflows/docker_build.yml

@@ -1,99 +0,0 @@
-name: Build Docker
-
-# Build Docker image, push untagged (digest-only)
-
-on:
-  workflow_call:
-    secrets:
-      DOCKER_FIRMWARE_TOKEN:
-        required: false # Only required for push
-    inputs:
-      distro:
-        description: Distro to target
-        required: true
-        type: string
-        # choices: [debian, alpine]
-      platform:
-        description: Platform to target
-        required: true
-        type: string
-      runs-on:
-        description: Runner to use
-        required: true
-        type: string
-      push:
-        description: Push images to registry
-        required: false
-        type: boolean
-        default: false
-      pio_env:
-        description: PlatformIO environment to build
-        required: false
-        type: string
-        default: native
-    outputs:
-      digest:
-        description: Digest of built image
-        value: ${{ jobs.docker-build.outputs.digest }}
-
-permissions:
-  contents: write
-  packages: write
-
-jobs:
-  docker-build:
-    outputs:
-      digest: ${{ steps.docker_variant.outputs.digest }}
-    runs-on: ${{ inputs.runs-on }}
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-        with:
-          submodules: recursive
-          ref: ${{github.event.pull_request.head.ref}}
-          repository: ${{github.event.pull_request.head.repo.full_name}}
-
-      - name: Get release version string
-        run: |
-          echo "long=$(./bin/buildinfo.py long)" >> $GITHUB_OUTPUT
-        id: version
-
-      - name: Docker login
-        if: ${{ inputs.push }}
-        uses: docker/login-action@v3
-        with:
-          username: meshtastic
-          password: ${{ secrets.DOCKER_FIRMWARE_TOKEN }}
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-
-      - name: Docker setup
-        uses: docker/setup-buildx-action@v3
-
-      - name: Sanitize platform string
-        id: sanitize_platform
-        # Replace slashes with underscores
-        run: echo "cleaned_platform=${{ inputs.platform }}" | sed 's/\//_/g' >> $GITHUB_OUTPUT
-
-      - name: Docker tag
-        id: meta
-        uses: docker/metadata-action@v5
-        with:
-          images: meshtastic/meshtasticd
-          tags: |
-            GHA-${{ steps.version.outputs.long }}-${{ inputs.distro }}-${{ steps.sanitize_platform.outputs.cleaned_platform }}
-          flavor: latest=false
-
-      - name: Docker build and push
-        uses: docker/build-push-action@v6
-        id: docker_variant
-        with:
-          context: .
-          file: |
-            ${{ contains(inputs.distro, 'debian') && './Dockerfile' || contains(inputs.distro, 'alpine') && './alpine.Dockerfile' }}
-          push: ${{ inputs.push }}
-          tags: ${{ steps.meta.outputs.tags }} # Tag is only meant to be consumed by the "manifest" job
-          platforms: ${{ inputs.platform }}
-          build-args: |
-            PIO_ENV=${{ inputs.pio_env }}