Add GH Action.

Author: dsvensson

.github/workflows/main.yml

@@ -0,0 +1,39 @@
+name: Build and Push Docker Image
+
+on:
+    push:
+        branches:
+            - main  # or the branch you want to trigger on
+
+jobs:
+    build-and-push:
+        runs-on: ubuntu-latest
+
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v3
+
+            - name: Log in to GitHub Container Registry
+              run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
+
+            - name: Set up QEMU
+              uses: docker/setup-qemu-action@v2
+              with:
+                  platforms: arm64, amd64
+
+            - name: Set up Docker Buildx
+              uses: docker/setup-buildx-action@v2
+              with:
+                  install: true
+
+            - name: Build and push Docker image
+              uses: docker/build-push-action@v4
+              with:
+                  context: .
+                  file: ./Dockerfile
+                  push: true
+                  tags: ghcr.io/${{ github.repository_owner }}/ktx-qvm:latest
+                  platforms: linux/amd64, linux/arm64
+
+            - name: Log out from GitHub Container Registry
+              run: docker logout ghcr.io