Update example env after building stable images

.github/scripts/update_example_env.py

@@ -0,0 +1,32 @@
+import os
+import re
+
+
+def get_versions():
+    frappe_version = os.getenv("FRAPPE_VERSION")
+    erpnext_version = os.getenv("ERPNEXT_VERSION")
+    assert frappe_version, "No Frappe version set"
+    assert erpnext_version, "No ERPNext version set"
+    return frappe_version, erpnext_version
+
+
+def update_env(frappe_version: str, erpnext_version: str):
+    with open("example.env", "r+") as f:
+        content = f.read()
+        for env, var in (
+            ("FRAPPE_VERSION", frappe_version),
+            ("ERPNEXT_VERSION", erpnext_version),
+        ):
+            content = re.sub(rf"{env}=.*", f"{env}={var}", content)
+        f.seek(0)
+        f.truncate()
+        f.write(content)
+
+
+def main() -> int:
+    update_env(*get_versions())
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

.github/workflows/build_stable.yml

@@ -53,6 +53,37 @@ jobs:
       DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
       DOCKERHUB_TOKEN: ${{ secrets.DOCKERHUB_TOKEN }}
 
+  update_example_env:
+    runs-on: ubuntu-latest
+    if: ${{ github.repository == 'frappe/frappe_docker' && github.event_name != 'pull_request' }}
+    needs: v13
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+
+      - name: Get latest versions
+        run: python3 ./.github/scripts/get_latest_tags.py --repo erpnext --version 13
+
+      - name: Update example.env
+        run: python3 ./.github/scripts/update_example_env.py
+
+      - name: Setup Git Credentials
+        run: |
+          git config --global user.name github-actions
+          git config --global user.email github-actions@github.com
+
+      - name: Commit and push
+        run: |
+          git add example.env
+          git commit -m "chore: Update `example.env`"
+          git push origin main
+
   release_helm:
     runs-on: ubuntu-latest
     if: ${{ github.repository == 'frappe/frappe_docker' && github.event_name != 'pull_request' }}