Added missing build file

.github/workflows/provider-packaging.yaml

@@ -0,0 +1,36 @@
+name: Publish provider packages
+
+on:
+  push:
+    tags:
+      - v*
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: docker-practice/actions-setup-docker@master
+      - uses: earthly/actions-setup@v1
+        with:
+          version: "v0.6.30"
+      - run: earthly --ci +lint
+  build-provider-package:
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+    steps:
+      - uses: actions/checkout@v2
+      - uses: docker-practice/actions-setup-docker@master
+      - uses: earthly/actions-setup@v1
+        with:
+          version: "v0.6.30"
+      - uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }} 
+      - run: earthly --ci --push +provider-package-all-platforms --IMAGE_REPOSITORY=ghcr.io/kairos-io