move docs CI/CD to independent unit

Signed-off-by: Michele Dolfi <dol@zurich.ibm.com>

.github/workflows/cd-docs.yml

@@ -0,0 +1,14 @@
+name: "Run Docs CD"
+
+on:
+  push:
+    branches:
+      - "main"
+
+jobs:
+  build-deploy-docs:
+    uses: ./.github/workflows/docs.yml
+    with:
+      deploy: true
+    permissions:
+      contents: write

.github/workflows/cd.yml

@@ -10,12 +10,6 @@ env:
 jobs:
   code-checks:
     uses: ./.github/workflows/checks.yml
-  build-deploy-docs:
-    uses: ./.github/workflows/docs.yml
-    with:
-      deploy: true
-    permissions:
-      contents: write
   pre-release-check:
     runs-on: ubuntu-latest
     outputs:

.github/workflows/ci-docs.yml

@@ -0,0 +1,16 @@
+name: "Run Docs CI"
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+  push:
+    branches:
+      - "**"
+      - "!gh-pages"
+
+jobs:
+  build-docs:
+    if: ${{ github.event_name == 'push' || (github.event.pull_request.head.repo.full_name != 'DS4SD/docling' && github.event.pull_request.head.repo.full_name != 'ds4sd/docling') }}
+    uses: ./.github/workflows/docs.yml
+    with:
+      deploy: false

.github/workflows/ci.yml

@@ -6,6 +6,7 @@ on:
   push:
     branches:
       - "**"
+      - "!main"
       - "!gh-pages"
 
 env:
@@ -16,8 +17,3 @@ jobs:
   code-checks:
     if: ${{ github.event_name == 'push' || (github.event.pull_request.head.repo.full_name != 'DS4SD/docling' && github.event.pull_request.head.repo.full_name != 'ds4sd/docling') }}
     uses: ./.github/workflows/checks.yml
-  build-docs:
-    if: ${{ github.event_name == 'push' || (github.event.pull_request.head.repo.full_name != 'DS4SD/docling' && github.event.pull_request.head.repo.full_name != 'ds4sd/docling') }}
-    uses: ./.github/workflows/docs.yml
-    with:
-      deploy: false