ci/cd: remove PR docker build action

.github/workflows/pr-docker-build.yml

@@ -1,52 +0,0 @@
-name: PR Docker Build
-
-on:
-  pull_request:
-    branches: [main]
-    types: [opened, synchronize]
-    paths-ignore:
-      - "**.md"
-      - ".github/**"
-
-jobs:
-  build-pr:
-    runs-on: ubuntu-22.04
-    permissions:
-      contents: read
-      packages: write
-      pull-requests: write
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
-        with:
-          registry: ghcr.io
-          username: ${{ github.repository_owner }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Build and push
-        uses: docker/build-push-action@v4
-        with:
-          tags: ghcr.io/${{ github.repository }}:pr-${{ github.event.pull_request.number }}
-          context: .
-          platforms: linux/amd64, linux/arm64
-          push: true
-          labels: |
-            org.opencontainers.image.title=Pocket ID - PR #${{ github.event.pull_request.number }}
-            org.opencontainers.image.description=PR Build for ${{ github.event.pull_request.title }}
-            org.opencontainers.image.source=${{ github.event.pull_request.html_url }}
-
-      - name: Update PR Description
-        if: github.event.action == 'opened'
-        uses: nefrob/pr-description@v1.2.0
-        with:
-          content: "\n\n---\nDocker image for this PR is available at `ghcr.io/${{ github.repository }}:pr-${{ github.event.pull_request.number }}`"
-          token: ${{ secrets.GITHUB_TOKEN }}