Use string comparison

Author: jkager

.github/workflows/workflow.yml

@@ -75,8 +75,8 @@ jobs:
         uses: docker/build-push-action@v4
         with:
           context: .
-          push: ${{env.is_publish}}
-          load: ${{env.is_publish != true}}
+          push: ${{env.is_publish == 'true'}}
+          load: ${{env.is_publish == 'false'}}
           tags: |
             ${{env.docker_image}}:local
             ${{steps.meta.outputs.tags}}
@@ -85,11 +85,11 @@ jobs:
           cache-to: type=local,mode=max,dest=${{env.docker_cache_out}}
 
       - name: Test Docker image
-        if: env.is_publish != true
+        if: env.is_publish == 'false'
         run: make test-ci
 
       - name: Publish output as build artifact
-        if: env.is_publish != true
+        if: env.is_publish == 'false'
         uses: actions/upload-artifact@v3
         with:
           name: gitstats-output