CI: Add steps to setup, build, and test program

.github/workflows/main.yml

@@ -0,0 +1,52 @@
+name: Build and test hello-world program
+
+on: [pull_request, push]
+
+env:
+  ZIG_SOLANA_VERSION: v1.39
+  ZIG_SOLANA_DIR: zig-x86_64-linux-gnu-baseline
+
+jobs:
+  program:
+    name: Build and test helloworld
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: recursive
+
+    - uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+          ~/.cargo/zig
+          $ZIG_SOLANA_DIR
+        key: zig-solana-${{ hashFiles('./program-test/Cargo.lock') }}-$ZIG_SOLANA_VERSION
+
+    - name: Download zig-solana compiler
+      shell: bash
+      run: |
+        ZIG_SOLANA_RELEASE_URL=https://github.com/joncinque/zig-bootstrap-solana/releases/download/solana-$ZIG_SOLANA_VERSION
+        ZIG_SOLANA_TAR=zig-x86_64-linux-gnu.tar.bz2
+        curl --proto '=https' --tlsv1.2 -sSfOL $ZIG_SOLANA_RELEASE_URL/$ZIG_SOLANA_TAR
+        tar -xjf $ZIG_SOLANA_TAR
+
+    - name: Test program
+      shell: bash
+      run: $ZIG_SOLANA_DIR/zig build test --global-cache-dir zig-global-cache --summary all
+
+    - name: Install Rust
+      uses: dtolnay/rust-toolchain@master
+      with:
+        toolchain: 1.76.0
+
+    - name: Install build deps
+      shell: bash
+      run: |
+        sudo apt update
+        sudo apt install protobuf-compiler -y
+
+    - name: Build and test program
+      shell: bash
+      run: ./program-test/test.sh $ZIG_SOLANA_DIR/zig

program-test/test.sh

@@ -6,5 +6,5 @@ if [[ -z "$ZIG" ]]; then
   ZIG="$ROOT_DIR/../zig-x86_64-linux-gnu-baseline/zig"
 fi
 set -e
-$ZIG build --summary all
+$ZIG build --summary all --verbose --global-cache-dir zig-global-cache
 SBF_OUT_DIR="$ROOT_DIR/zig-out/lib" cargo test --manifest-path "$ROOT_DIR/program-test/Cargo.toml"