create actions jobs

Trying to remember the basic syntax

pixi-setup taken from https://github.com/marketplace/actions/setup-pixi

.github/workflows/build-all.yaml

@@ -1,12 +1,28 @@
-- uses: prefix-dev/[email protected]
-  with:
-    pixi-version: v0.39.2
-    cache: true
-    # auth-host: prefix.dev
-    # auth-token: ${{ secrets.PREFIX_DEV_TOKEN }}
-- run:
-  - pixi --version
-  - pixi run clean
-  - pixi run build
-  - pixi run check
-  - pixi run docs
+name: build
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Check out repo
+      uses: actions/checkout@v2
+    - name: Install pixi
+      uses: prefix-dev/[email protected]
+      with:
+        pixi-version: v0.39.2
+        cache: true
+        # auth-host: prefix.dev
+        # auth-token: ${{ secrets.PREFIX_DEV_TOKEN }}
+      run: pixi --version
+    - name: build all 
+      run: |
+        pixi run clean
+        pixi run build
+        pixi run check
+        pixi run docs