Add GitHub action for build on push

.github/workflows/build-latest-image.yml

@@ -0,0 +1,30 @@
+name: Build latest Docker image
+on:
+  push:
+    branches:
+      - master
+jobs:
+  docker:
+    permissions:
+      contents: read
+      packages: write
+    runs-on:
+      - ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@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: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ghcr.io/${{ github.actor }}/cfr_train_info_telegram_bot:latest