Fixed repository path in the GH workflow (#39)

Author: e-minguez

.github/workflows/build-scan-and-push.yaml

@@ -26,7 +26,7 @@ jobs:
       uses: docker/build-push-action@v3
       with:
         context: ${{ env.DOCKERFILE_CONTEXT }}
-        tags: ${{ env.REGISTRY_HOST }}/${{ github.actor }}/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}
+        tags: ${{ env.REGISTRY_HOST }}/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}
         load: true
 
     - name: Setup cache
@@ -54,7 +54,7 @@ jobs:
       run: |
         ${GITHUB_WORKSPACE}/cache/sysdig-cli-scanner \
           --apiurl ${SYSDIG_SECURE_ENDPOINT} \
-          docker://${REGISTRY_HOST}/${{github.actor}}/${IMAGE_NAME}:${IMAGE_TAG} \
+          docker://${REGISTRY_HOST}/${{github.repository_owner}}/${IMAGE_NAME}:${IMAGE_TAG} \
           --console-log \
           --dbpath=${GITHUB_WORKSPACE}/cache/db/ \
           --cachepath=${GITHUB_WORKSPACE}/cache/scanner-cache/
@@ -63,12 +63,12 @@ jobs:
        uses: docker/login-action@v2
        with:
         registry: ${{ env.REGISTRY_HOST }}
-        username: ${{ github.actor }}
+        username: ${{ github.repository_owner }}
         password: ${{ secrets.GITHUB_TOKEN }}
 
     - name: Push
       uses: docker/build-push-action@v3
       with:
         context: ${{ env.DOCKERFILE_CONTEXT }}
         push: true
-        tags: ${{ env.REGISTRY_HOST }}/${{ github.actor }}/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}
+        tags: ${{ env.REGISTRY_HOST }}/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}