build: add action to build container image

.github/workflows/build.yaml

@@ -0,0 +1,17 @@
+name: Docker Build Validation
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  Build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v3
+
+      - name: Build Docker Image
+        run: |
+          docker build -t github-readme-stats:latest .