Fix tests

.github/workflows/build_and_test_on_pr.yml

@@ -52,7 +52,7 @@ jobs:
           export DOCKERID=`docker run -v $PWD/tmp:/home/aiida -d aiida-prerequisites:latest`
           docker exec --tty --user root $DOCKERID wait-for-services
           docker exec --tty --user aiida $DOCKERID wait-for-services
-          docker exec --tty --user aiida $DOCKERID /bin/bash -l -c 'conda run -n pgsql pg_ctl -D /home/$SYSTEM_USER/.postgresql status' # Check that postgres is up.
+          docker exec --tty --user aiida $DOCKERID /bin/bash -l -c '/opt/conda/envs/pgsql/bin/pg_ctl -D /home/$SYSTEM_USER/.postgresql status' # Check that postgres is up.
           docker exec --tty --user root $DOCKERID /bin/bash -l -c 'service rabbitmq-server status' # Check that rabbitmq is up.
           docker exec --tty --user aiida $DOCKERID /bin/bash -l -c 'conda create -y -n test_env python=3.8' # Check that one can create a new conda environment.
           docker exec --tty --user aiida $DOCKERID /bin/bash -l -c 'conda activate test_env' # Check that new environment works.