Split linting stage from main Github CI/CD

Author: insspb

.github/workflows/linting.yml

@@ -0,0 +1,36 @@
+name: Linting Tests
+# Only for last versions of python
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - "*"
+  pull_request:
+    branches:
+      - "*"
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: "linting"
+            python: "3.8"
+            os: ubuntu-latest
+            tox_env: "lint"
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python }}
+      uses: actions/setup-python@v1
+      with:
+        python-version: ${{ matrix.python }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install tox virtualenv
+    - name: Test build
+      run: "tox -e ${{ matrix.tox_env }}"

.github/workflows/main.yml

@@ -12,19 +12,11 @@ on:
 
 jobs:
   build:
-    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         mongodb-version: [3.6, 4.0, 4.2]
-
         include:
-          - name: "linting"
-            python: "3.8"
-            os: ubuntu-latest
-            tox_env: "lint"
-            mongodb-version: 4.2
-
           - name: "ubuntu-py36"
             python: "3.6"
             os: ubuntu-latest