Add GitHub Actions (#2)

* add raspberry image

* Create hcp-packer.yml

* Update hcp-packer.yml

.github/workflows/hcp-packer.yml

@@ -0,0 +1,38 @@
+name: hcp-packer
+
+on:
+  push:
+    branches:
+      - "master"
+      - "develop/**"
+      - "releases/**"
+      - "features/**"
+  pull_request:
+    branches: ["master", "staging"]
+  workflow_dispatch:
+
+jobs:
+  hcp-packer:
+    runs-on: ubuntu-latest
+    name: Run Packer
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Setup `packer`
+        uses: hashicorp/setup-packer@main
+        id: setup
+        with:
+          version: "latest"
+      - name: Run `packer init`
+        id: init
+        run: "packer init ./image.pkr.hcl"
+      - name: Run `packer validate`
+        id: validate
+        run: "packer validate ./image.pkr.hcl"
+
+      - name: Build Artifact
+        run: packer build -color=false -on-error=abort ./image.pkr.hcl
+        env:
+          HCP_CLIENT_ID: ${{ secrets.HCP_CLIENT_ID }}
+          HCP_CLIENT_SECRET: ${{ secrets.HCP_CLIENT_SECRET }}
+          HCP_PACKER_BUILD_FINGERPRINT: "run.id.${{ github.run_id }}.run.attempt.${{ github.run_attempt }}"