cleanup build steps

.github/workflows/ci.yaml

@@ -16,25 +16,23 @@ jobs:
         run: cd frontend/rust-lib && cargo test
       - name: Run shared-lib tests
         run: cd shared-lib && cargo test
-  build-linux:
+  build-ubuntu:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Packages
-        run: sudo apt-get update && sudo apt-get install -y curl build-essential libsqlite3-dev libssl-dev clang cmake ninja-build pkg-config libgtk-3-dev
+        run: |
+          sudo wget -qO /etc/apt/trusted.gpg.d/dart_linux_signing_key.asc https://dl-ssl.google.com/linux/linux_signing_key.pub
+          sudo wget -qO /etc/apt/sources.list.d/dart_stable.list https://storage.googleapis.com/download.dartlang.org/linux/debian/dart_stable.list
+          sudo apt-get update
+          sudo apt-get install -y dart curl build-essential libsqlite3-dev libssl-dev clang cmake ninja-build pkg-config libgtk-3-dev
       - name: Rust
         run: |
           curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
           source $HOME/.cargo/env
           rustup toolchain install nightly
           rustup default nightly
-      - name: Dart
-        run: |
-          sudo wget -qO /etc/apt/trusted.gpg.d/dart_linux_signing_key.asc https://dl-ssl.google.com/linux/linux_signing_key.pub
-          sudo wget -qO /etc/apt/sources.list.d/dart_stable.list https://storage.googleapis.com/download.dartlang.org/linux/debian/dart_stable.list
-          sudo apt update
-          sudo apt install -y dart
       - name: Flutter
         run: |
           git clone https://github.com/flutter/flutter.git