Fix CI with the quirks of old and new QGIS docker images

.docker/Dockerfile

@@ -3,12 +3,17 @@ FROM  qgis/qgis:${QGIS_TEST_VERSION}
 MAINTAINER Matthias Kuhn <[email protected]>
 
 RUN apt-get update \
-    && apt-get install -y \
-         python3-pip \
+    && apt-get install -y python3-pip \
     && rm -rf /var/lib/apt/lists/*
 
 COPY ./requirements.txt /tmp/
-RUN pip3 install -r /tmp/requirements.txt
+
+# Upgrading `pip` fixes: "WARNING: Generating metadata for package libqfieldsync produced metadata for project name unknown. Fix your #egg=libqfieldsync fragments."
+# However, in QGIS>=3.38, this command fail as `pip` is Debian installed and protected, hence we have `|| true`.
+RUN pip3 install --upgrade pip || true
+
+# images for QGIS<=3.34 uses much older `pip` that does not support `--break-system-packages`
+RUN pip3 install -r /tmp/requirements.txt || pip3 install -r /tmp/requirements.txt --break-system-packages
 
 ENV LANG=C.UTF-8
 

.github/workflows/continuous_integration.yml

@@ -55,7 +55,7 @@ jobs:
 
       - name: Test
         run: |
-          docker-compose -f .docker/docker-compose.gh.yml run qgis /usr/src/.docker/run-docker-tests.sh
+          docker compose -f .docker/docker-compose.gh.yml run qgis /usr/src/.docker/run-docker-tests.sh
 
   test-22-04:
     runs-on: ubuntu-22.04
@@ -75,6 +75,10 @@ jobs:
           sudo apt install qgis
           sudo pip3 install pytest nose2 mock
 
+          # Upgrading `pip` fixes: "WARNING: Generating metadata for package libqfieldsync produced metadata for project name unknown. Fix your #egg=libqfieldsync fragments."
+          pip3 install --upgrade pip
+
+          # Install dependencies, including `libqfieldsync`
           pip3 install -r requirements.txt
 
           xvfb-run pytest

requirements.txt

@@ -1,6 +1,7 @@
 flake8==2.5.5
 pep8-naming
 flake8-respect-noqa
+nose2
 pytest
 future
 transifex-client