Try to get ubuntu to build

A bit difficult to figure out how to include the apt-get command only for one item in the matrix...

.github/workflows/rust.yml

@@ -11,15 +11,18 @@ env:
 
 jobs:
   build:
-
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         os: [macOS-latest, windows-2019, ubuntu-latest]
+        include:
+          - os: ubuntu-latest
+            command: sudo apt-get update && sudo apt-get install libxcb-render0-dev libxcb-shape0-dev libxcb-xfixes0-dev libspeechd-dev libxkbcommon-dev libssl-dev libgtk-3-dev
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose
+      - uses: actions/checkout@v2
+      - run: ${{ matrix.command }}
+      - name: Build
+        run: cargo build --verbose
+      - name: Run tests
+        run: cargo test --verbose