.github: Add container.yaml

Automatically update teuthology-api:main image
on quay.

This is a TEST run with container-push-ci branch.

Signed-off-by: Vallari Agrawal <val.agl002@gmail.com>

.github/workflows/container.yaml

@@ -0,0 +1,36 @@
+# Automatically update teuthology-api:main image on quay.io/ceph-infra/teuthology-api
+name: Push Container to Quay
+on:
+  push:
+    branches:
+      - container-push-ci
+    tags:
+      - '*'
+  workflow_dispatch:
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        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 Quay.io
+        uses: docker/login-action@v3
+        with:
+          registry: quay.io
+          username: ${{ secrets.QUAY_USERNAME }}
+          password: ${{ secrets.QUAY_ROBOT_TOKEN }}
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          # QUAY_URI is set using https://github.com/ceph/teuthology-api/settings/variables/actions
+          tags: ${{ vars.QUAY_URI }}:${{ github.ref_name }}
+          outputs: type=image,name=target