feat: add gitea workflow

.gitea/workflows/build.yaml

@@ -0,0 +1,19 @@
+name: build-terraform-alpine
+on: [push]
+
+jobs:
+  build-image:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out
+        uses: actions/checkout@v4
+      - name: Build Image
+        run: |
+          docker build --build-arg PRODUCT=terraform --build-arg VERSION=1.7.2 -t gitea.jrdn.dev/${{vars.REPO_USERNAME}}/terraform-alpine:latest .
+      - name: Authenticate to Container Registry
+        run: |
+          docker login -u ${{vars.REPO_USERNAME}} -p ${{secrets.REPO_TOKEN}} gitea.jrdn.dev
+      - name: Push to Gitea Packages
+        run: |
+          docker push gitea.jrdn.dev/${{vars.REPO_USERNAME}}/terraform-alpine:latest