ga: install zstd headers, add names to steps
diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 6ddd66a..3af7ab8 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -6,5 +6,10 @@
 #    runs-on: [ ubuntu-latest, windows-latest, macos-latest ]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: lukka/run-cmake@v3
+      - name: checkout
+        uses: actions/checkout@v2
+      - name: install dependencies
+        run: |
+          sudo apt-get update -m && sudo apt-get install libzstd-dev
+      - name: build
+        uses: lukka/run-cmake@v3