ci: Standardise jobs a bit

.builds/tests-archlinux.yml

@@ -36,8 +36,9 @@ environment:
   REQUIREMENTS: release
   # TODO: ETESYNC_TESTS
 tasks:
-  - setup: |
+  - docker: |
       sudo systemctl start docker
+  - setup: |
       cd vdirsyncer
       python -m build --wheel --skip-dependency-check --no-isolation
       sudo python -m installer dist/*.whl

.builds/tests-minimal.yml

@@ -19,12 +19,12 @@ environment:
   REQUIREMENTS: minimal
   # TODO: ETESYNC_TESTS
 tasks:
-  - docker: |
-      sudo addgroup $(whoami) docker
-      sudo service docker start
   - venv: |
       python3 -m venv $HOME/venv
       echo "export PATH=$HOME/venv/bin:$PATH" >> $HOME/.buildenv
+  - docker: |
+      sudo addgroup $(whoami) docker
+      sudo service docker start
   - setup: |
       cd vdirsyncer
       make -e install-dev

.builds/tests-pypi.yml

@@ -20,8 +20,9 @@ tasks:
   - venv: |
       python -m venv $HOME/venv
       echo "export PATH=$HOME/venv/bin:$PATH" >> $HOME/.buildenv
-  - setup: |
+  - docker: |
       sudo systemctl start docker
+  - setup: |
       cd vdirsyncer
       make -e install-dev
   - test: |