Add github actions caching

book/codequality/cicd.ipynb

@@ -54,6 +54,60 @@
    "source": [
     "act"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Cache Python Dependencies in GitHub Actions"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Don’t waste time for your GitHub Actions workflows.\n",
+    "\n",
+    "Whenever a new run is triggered, your dependencies are probably installed again and again and again…\n",
+    "\n",
+    "Even if you didn’t change anything in your dependency file.\n",
+    "\n",
+    "With the small snippet below, the action caches your dependencies so you can skip the install step the next time your workflow runs."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "vscode": {
+     "languageId": "plaintext"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "name: ci\n",
+    "\n",
+    "on:\n",
+    "  push:\n",
+    "    branches: [ main ]\n",
+    "    \n",
+    "jobs:\n",
+    "\n",
+    "  build:\n",
+    "\n",
+    "    runs-on: ubuntu-latest\n",
+    "    \n",
+    "    steps:\n",
+    "    - uses: actions/checkout@v4\n",
+    "    - uses: actions/setup-python@v4\n",
+    "      with:\n",
+    "        python-version: '3.9'\n",
+    "        cache: 'pip' # caching pip dependencies (supports poetry and pipenv too)\n",
+    "    - run: pip install -r requirements.txt\n",
+    "\n",
+    "    - name: Run Python unit tests\n",
+    "      run: python3 -u -m unittest tests/tests.py"
+   ]
   }
  ],
  "metadata": {