feat: build containers for iperf with github actions

.github/workflows/container.yaml

@@ -0,0 +1,58 @@
+---
+name: Build Container
+
+on:
+  pull_request:
+  push:
+    branches: ["master"]
+  release:
+    types: ["published"]
+
+jobs:
+  build-container:
+    if: ${{ github.event.pull_request.head.repo.full_name == github.repository || github.event_name != 'pull_request' }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            ghcr.io/${{ github.repository }}
+          tags: |
+            type=semver,pattern={{version}},prefix=v
+            type=semver,pattern={{major}}.{{minor}},prefix=v
+            type=semver,pattern={{major}},prefix=v
+            type=ref,event=branch
+            type=ref,event=pr
+          flavor: |
+            latest=auto
+
+      - 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.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and Push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./contrib/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}