docs: update cdn link (#698)

Signed-off-by: Carson Yang <yangchuansheng33@gmail.com>

.github/sync_imgs.yml

@@ -0,0 +1,4 @@
+yangchuansheng/fastgpt-imgs:
+  - source: docSite/assets/imgs/
+    dest: imgs/
+    deleteOrphaned: true

.github/workflows/deploy-docs.yml

@@ -45,6 +45,10 @@ jobs:
               - 'docSite/content/docs/**'
           base: main
 
+      - name: Add cdn for images
+        run: |
+          sed -i "s#\](/imgs/#\](https://cdn.jsdelivr.us/gh/yangchuansheng/fastgpt-imgs@main/imgs/#g" $(grep -rl "\](/imgs/" docSite/content/docs)
+
       # Step 3 - Install Hugo (specific version)
       - name: Install Hugo
         uses: peaceiris/actions-hugo@v2

.github/workflows/deploy-preview.yml

@@ -45,6 +45,10 @@ jobs:
               - 'docSite/content/docs/**'
           base: main
 
+      - name: Add cdn for images
+        run: |
+        sed -i "s#\](/imgs/#\](https://cdn.jsdelivr.us/gh/yangchuansheng/fastgpt-imgs@main/imgs/#g" $(grep -rl "\](/imgs/" docSite/content/docs)
+
       # Step 3 - Install Hugo (specific version)
       - name: Install Hugo
         uses: peaceiris/actions-hugo@v2

.github/workflows/sync_imgs.yml

@@ -0,0 +1,35 @@
+name: Sync images
+on:
+  pull_request_target:
+    branches:
+      - main
+    paths:
+      - docSite/assets/imgs/**
+  push:
+    branches:
+      - main
+    paths:
+      - docSite/assets/imgs/**
+  workflow_dispatch:
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        if: ${{ (github.event_name == 'pull_request_target') }}
+        with:
+          ref: ${{ github.event.pull_request.head.ref }}
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
+
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Run GitHub File Sync
+        uses: BetaHuhn/repo-file-sync-action@v1.21.0
+        with:
+          GH_PAT: ${{ secrets.IMG_GH_PAT }}
+          CONFIG_PATH: .github/sync_imgs.yml
+          ORIGINAL_MESSAGE: true
+          SKIP_PR: true
+          COMMIT_EACH_FILE: false