Skip CI on ignoring given paths (#1078)

* Skip CI on ignoring given paths

Signed-off-by: del-zhenwu <dele.zhenwu@gmail.com>

* Fix ignoring path with using

Signed-off-by: del-zhenwu <dele.zhenwu@gmail.com>

.github/workflows/build.yml

@@ -1,27 +1,25 @@
 name: build
 
-on: [push, pull_request]
+on:
+  push:
+    paths-ignore:
+      - 'demo/**'
+      - '.dev/**'
+      - 'docker/**'
+      - 'tools/**'
+      - '**.md'
+
+  pull_request:
+    paths-ignore:
+      - 'demo/**'
+      - '.dev/**'
+      - 'docker/**'
+      - 'tools/**'
+      - 'docs/**'
+      - 'docs_zh-CN/**'
+      - '**.md'
 
 jobs:
-  lint:
-    runs-on: ubuntu-18.04
-    steps:
-      - uses: actions/checkout@v2
-      - name: Set up Python 3.7
-        uses: actions/setup-python@v2
-        with:
-          python-version: 3.7
-      - name: Install pre-commit hook
-        run: |
-          pip install pre-commit
-          pre-commit install
-      - name: Linting
-        run: pre-commit run --all-files
-      - name: Check docstring coverage
-        run: |
-          pip install interrogate
-          interrogate -v --ignore-init-method --ignore-module --ignore-nested-functions --exclude mmseg/ops --ignore-regex "__repr__" --fail-under 80 mmseg
-
   build_cpu:
     runs-on: ubuntu-18.04
     strategy:

.github/workflows/lint.yml

@@ -0,0 +1,23 @@
+name: lint
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.7
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.7
+      - name: Install pre-commit hook
+        run: |
+          pip install pre-commit
+          pre-commit install
+      - name: Linting
+        run: pre-commit run --all-files
+      - name: Check docstring coverage
+        run: |
+          pip install interrogate
+          interrogate -v --ignore-init-method --ignore-module --ignore-nested-functions --exclude mmseg/ops --ignore-regex "__repr__" --fail-under 80 mmseg