Update CD pipeline

.github/workflows/cd.yml

@@ -1,9 +1,10 @@
 name: CD
 
 on:
+# Workflow dispatch for now, while we're testing environments
   push:
     tags:
-      - '*'
+      - 'v*'
       - "!daily-*"
 
 env:
@@ -13,6 +14,7 @@ jobs:
   docker-push:
     name: Push to container registry
     runs-on: ubuntu-latest
+    environment: Production Docker Registry
     steps:
     - name: Setup Go
       uses: actions/setup-go@v4
@@ -21,6 +23,8 @@ jobs:
         go-version: ${{ env.GO_VERSION }}
     - name: Checkout repo
       uses: actions/checkout@v2
+      with:
+        ref: ${{ inputs.tag }}
     # Provide Google Service Account credentials to Github Action, allowing interaction with the Google Container Registry
     # Logging in as [email protected]
     - id: auth