create reusable workflow and reuse it

.github/workflows/cache_setup.yml

@@ -1,9 +1,8 @@
-name: ci
+name: cache
 
 on:
   # Triggers the workflow on push but only for the main branch
-  push:
-    branches: [ workflow_trials ]
+  workflow_call:
 
 jobs:
   cache:
@@ -19,23 +18,3 @@ jobs:
         with:
           python-version: 3.8
           poetry-version: 1.2.2
-
-      #------------------------#
-      #  Run your actual job   #
-      #------------------------#
-      # - name: Run tests
-      #   run: |
-      #     poetry run pytest
-
-  documentation:
-    needs: [cache]
-    runs-on: ubuntu-latest
-    steps:
-      - name: Export requirements.txt
-        run: poetry export --without-hashes --format=requirements.txt -o docs/requirements.txt -E docs -E notebook
-      # - name: Commit changes
-      #   uses: EndBug/add-and-commit@v9
-      #   with:
-      #     default_author: github_actions
-      #     message: 'Updating requirements for docs'
-      #     add: 'docs/requirements.txt'

.github/workflows/documentation.yml

@@ -0,0 +1,22 @@
+name: documentation building
+
+on:
+  # Triggers the workflow on push but only for the main branch
+  push:
+    branches: [ workflow_trials ]
+
+jobs:
+  documentation:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: cache
+        uses: ./.github/workflows/cache_setup.yml
+      - name: Export requirements.txt
+        run: poetry export --without-hashes --format=requirements.txt -o docs/requirements.txt -E docs -E notebook
+      # - name: Commit changes
+      #   uses: EndBug/add-and-commit@v9
+      #   with:
+      #     default_author: github_actions
+      #     message: 'Updating requirements for docs'
+      #     add: 'docs/requirements.txt'