docker image build intro

.github/workflows/main.yml

@@ -0,0 +1,42 @@
+name: WRO Future Engineers Randomization App docker image
+
+on:
+  push:
+
+env:
+  DOCKER_REGISTRY: ghcr.io
+  DOCKER_USERNAME: ${{ github.actor }}
+  DOCKER_PASSWORD: ${{ secrets.GITHUB_TOKEN }}
+  IMAGE_NAME: ghcr.io/World-Robot-Olympiad-Association/fe-randomization-app
+
+jobs:
+  build-bot:
+    name: Bot docker image
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: ${{ env.IMAGE_NAME }}
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.DOCKER_REGISTRY }}
+          username: ${{ env.DOCKER_USERNAME }}
+          password: ${{ env.DOCKER_PASSWORD }}
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          push: true
+          platforms: linux/amd64,linux/arm64
+          file: ./Dockerfile
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha