Tried to use a relative and not an absolute path for venv

.github/workflows/push-actions.yml

@@ -16,12 +16,8 @@ jobs:
             apk upgrade
             apk add --virtual build-dependencies build-base gcc wget git
             apk add --no-cache python3 python3-dev py3-pip nodejs npm
-            python3 -m venv /venv
-            ls -l /venv
-            ls -l /venv/bin
-            chmod +x /venv/bin/activate
-            ls -l /venv/bin
-            /venv/bin/activate
+            python3 -m venv venv
+            source venv/bin/activate
             pip3 install pre-commit
             git config --global --add safe.directory /github/workspace
             pre-commit run --verbose --all-files > pre-commit-validation.txt & cat pre-commit-validation.txt
@@ -33,6 +29,7 @@ jobs:
               echo "Pre-commit did run on local machine."
             fi
 
+
   build_latex:
     name: Build lecture PDFs
     runs-on: ubuntu-latest