github actions python tests

.github/workflows/python-tests.yml

@@ -12,7 +12,7 @@ jobs:
 
     # Service containers to run with `test`
     services:
-      # Label used to access the service container
+      # https://docs.github.com/en/actions/using-containerized-services/creating-postgresql-service-containers
       postgres:
         # Docker Hub image
         image: postgres:15.2
@@ -28,7 +28,7 @@ jobs:
         ports:
           # Maps tcp port 5432 on service container to the host
           - 5432:5432
-      # Label used to access the service container
+      # https://docs.github.com/en/actions/using-containerized-services/creating-redis-service-containers
       redis:
         # Docker Hub image
         image: redis
@@ -53,7 +53,7 @@ jobs:
     - name: Install system dependencies
       run: |
         sudo apt-get update && sudo apt-get install -y --no-install-recommends \
-          libpoppler-cpp-dev
+          libpoppler-cpp-dev \
           python3-opencv \
           postgresql-client \
           libzbar0