Require image tag as input

* This makes it more explicit what's being deployed

Author: bogsi17

.github/workflows/continuous-deployment.yml

@@ -20,3 +20,4 @@ jobs:
     uses: ./.github/workflows/deploy-mavis.yml
     with:
       environment: ${{ matrix.environment }}
+      image_tag: ${{ github.sha }}

.github/workflows/deploy-mavis.yml

@@ -22,8 +22,8 @@ on:
           - production
           - copilotmigration
       image_tag:
-        description: Docker image tag
-        required: false
+        description: Docker image tag of the image to deploy
+        required: true
         type: string
 
 jobs: