new(ci): push docker images to ghcr.

Signed-off-by: Federico Di Pierro <nierro92@gmail.com>

.github/workflows/main.yml

@@ -0,0 +1,46 @@
+name: Build and Push docker images
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - 'images/**'  
+  push:
+    branches: 
+      - main
+    paths:
+      - 'images/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  push-images:
+    strategy:
+      fail-fast: false
+      matrix:
+        architecture: [X64, ARM64]
+    runs-on: [ "self-hosted", "linux", "${{matrix.architecture}}" ]   
+
+   steps:  
+     - name: Checkout repo
+       uses: actions/checkout@v3
+
+     - name: Login to Github Packages
+       uses: docker/login-action@v1
+       with:
+         registry: ghcr.io
+         username: ${{ github.actor }}
+         password: ${{ secrets.GITHUB_TOKEN }}
+
+     - name: Build images
+       working-directory: ./images
+       run: |
+         make build-all
+
+     - name: Push images
+       if: ${{ github.event_name == 'push' }} 
+       working-directory: ./images
+       run: |
+         make docker-push

images/Makefile

@@ -1,5 +1,5 @@
 DRY_RUN := false
-REPOSITORY := falcosecurity/kernel-testing
+REPOSITORY := ghcr.io/falcosecurity/kernel-testing
 ARCH ?= $(shell uname -m)
 YAML_FILE := images.yaml