fix indents, missing key, replace broken variable ref

Author: dev-dull

.github/workflows/docker-build.yaml

@@ -38,18 +38,19 @@ jobs:
 
       - name: Create summary header
         run: |
-          echo '## Test Results' >> $GITHUB_STEP_SUMMARY
+          echo '## Test Results' | tee -a $GITHUB_STEP_SUMMARY
 
   run_and_test:
-      runs-on: ${{ matrix.os }}
-      strategy:
-        matrix:
-          # TODO: Test OpenTofu
-          terraform_version:
-            - '1.10.4'  # Latest
-            - '1.5.6'   # Popular
-            - '1.3.9'   # Popular
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        # TODO: Test OpenTofu
+        terraform_version:
+          - '1.10.4'  # Latest
+          - '1.5.6'   # Popular
+          - '1.3.9'   # Popular
 
+    steps:
       - name: Download Docker Image
           uses: actions/download-artifact@v3
           with: