workflows: basic release build

.github/workflows/linux.yml

@@ -0,0 +1,20 @@
+name: Linux release
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-2004
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: dtolnay/rust-toolchain@stable
+    - run: cargo build --release