chore: import upstream snapshot with attribution

.github/workflows/docker.yml

@@ -0,0 +1,83 @@
+name: Docker
+
+on:
+  push:
+    branches: [main]
+    tags:
+      - 'v*'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write
+
+env:
+  REGISTRY: ghcr.io
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0  # v7.0.0
+        with:
+          fetch-depth: 0
+          persist-credentials: false
+
+      - uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16  # v6.5.0
+        with:
+          go-version-file: go.mod
+
+      - name: Restore pricing snapshot
+        run: go run ./internal/pricing/cmd/litellm-snapshot -restore
+
+      - name: Compute image build metadata
+        id: vars
+        shell: bash
+        run: |
+          if [[ "${GITHUB_REF}" == refs/tags/v* ]]; then
+            VERSION="${GITHUB_REF#refs/tags/}"
+          else
+            VERSION="dev"
+          fi
+          echo "version=${VERSION}" >> "$GITHUB_OUTPUT"
+          echo "commit=${GITHUB_SHA::8}" >> "$GITHUB_OUTPUT"
+          echo "build_date=$(date -u +"%Y-%m-%dT%H:%M:%SZ")" >> "$GITHUB_OUTPUT"
+          echo "image=${GITHUB_REPOSITORY,,}" >> "$GITHUB_OUTPUT"
+
+      - uses: docker/setup-qemu-action@06116385d9baf250c9f4dcb4858b16962ea869c3  # v4.1.0
+
+      - uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5  # v4.1.0
+
+      - uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee  # v4.2.0
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: docker/metadata-action@80c7e94dd9b9319bd5eb7a0e0fe9291e23a2a2e9  # v6.1.0
+        id: meta
+        with:
+          images: ${{ env.REGISTRY }}/${{ steps.vars.outputs.image }}
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=raw,value=stable,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
+            type=semver,pattern={{version}}
+          labels: |
+            org.opencontainers.image.title=agentsview
+            org.opencontainers.image.description=Local web viewer for AI agent sessions
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf  # v7.2.0
+        with:
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            VERSION=${{ steps.vars.outputs.version }}
+            COMMIT=${{ steps.vars.outputs.commit }}
+            BUILD_DATE=${{ steps.vars.outputs.build_date }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max