fix(maintenance_scripts: lint: shellcheck_makefile): force shell to sh before this got fixed

Author: actionless

.github/workflows/ci.yml

@@ -45,13 +45,13 @@ jobs:
       run: sed -i -e 's|FROM archlinux:base-devel|FROM actionless/pikaur|' Dockerfile_${PYVER}
 
     - name: build docker image
-      run: docker build . -f Dockerfile_${PYVER} -t oomox
+      run: docker build . -f Dockerfile_${PYVER} -t oomox_base16_plugin_test
 
     - name: run ci in docker
       run: docker run
         -e SKIP_SHELLCHECK=${SKIP_SHELLCHECK}
         -e SKIP_MYPY=${SKIP_MYPY}
         -e SKIP_VULTURE=${SKIP_VULTURE}
         -e THEMIX_GUI_PATH=${THEMIX_GUI_PATH}
-        oomox:latest
+        oomox_base16_plugin_test:latest
         ./maintenance_scripts/lint.sh

maintenance_scripts/lint.sh

@@ -97,7 +97,7 @@ else
 	echo ':: shellcheck passed ::'
 
 	echo -e "\n== Running Makefile shellcheck:"
-	"${THEMIX_GUI_PATH}/maintenance_scripts/makefile_shellcheck.py" ./Makefile_oomox_plugin
+	"${THEMIX_GUI_PATH}/maintenance_scripts/makefile_shellcheck.py" --shell=sh ./Makefile_oomox_plugin
 	echo ':: makefile shellcheck passed ::'
 fi