ci(deploy): set tag override for smoke test from img build

.github/workflows/build_and_deploy.yml

@@ -70,6 +70,7 @@ jobs:
       - name: Vars and Secrets to Env
         env:
           GIT_BRANCH: ${{ github.ref_name }}
+          TAG_OVERRIDE: ${{ needs.backend-build.outputs.image_tag }}
           VARS_CONTEXT: ${{ toJson(vars) }}
           SECRETS_CONTEXT: ${{ toJson(secrets) }}
         run: |
@@ -81,6 +82,7 @@ jobs:
 
           # Set all vars
           echo "GIT_BRANCH=${GIT_BRANCH}" >> $GITHUB_ENV
+          echo "TAG_OVERRIDE=${TAG_OVERRIDE}" >> $GITHUB_ENV
           echo "${VARS_CONTEXT}" | to_envs >> $GITHUB_ENV
           echo "${SECRETS_CONTEXT}" | to_envs >> $GITHUB_ENV
 
@@ -94,11 +96,12 @@ jobs:
           echo "Substituing variables from .env.example --> .env"
           ./envsubst < .env.example > .env
           echo "GIT_BRANCH=${GIT_BRANCH}" >> .env
+          echo "TAG_OVERRIDE=${TAG_OVERRIDE}" >> .env
 
       - name: Backend smoke test
         run: |
           # Migrate db first, so api works
-          docker compose up -d migrations
+          docker compose up migrations --exit-code-from migrations
 
           # Run without migrations (give exit code 0)
           docker compose up -d \