build: add github workflow

Author: horhulenko

.github/workflows/build.yml

@@ -0,0 +1,88 @@
+name: Build
+
+on:
+    push:
+
+jobs:
+    build:
+        name: Build — ${{ matrix.name }}
+        runs-on: ${{ matrix.os }}
+        strategy:
+            fail-fast: false
+            matrix:
+                include:
+                    - name: Linux
+                      os: ubuntu-latest
+                      target: x86_64-unknown-linux-musl
+                      binary: proxy-checker
+                      artifact: proxy-checker-linux
+
+                    - name: Windows
+                      os: windows-latest
+                      target: x86_64-pc-windows-msvc
+                      binary: proxy-checker.exe
+                      artifact: proxy-checker-windows
+
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+
+            - name: Install Rust
+              uses: dtolnay/rust-toolchain@stable
+              with:
+                  targets: ${{ matrix.target }}
+
+            - name: Install musl-tools
+              if: matrix.target == 'x86_64-unknown-linux-musl'
+              run: sudo apt-get install -y musl-tools
+
+            - name: Cache
+              uses: actions/cache@v4
+              with:
+                  path: |
+                      ~/.cargo/registry
+                      ~/.cargo/git
+                      target
+                  key: ${{ runner.os }}-cargo-${{ hashFiles('Cargo.lock') }}
+                  restore-keys: ${{ runner.os }}-cargo-
+
+            - name: Build
+              run: cargo build --release --target ${{ matrix.target }}
+
+            - name: Upload artifact
+              uses: actions/upload-artifact@v4
+              with:
+                  name: ${{ matrix.artifact }}
+                  path: target/${{ matrix.target }}/release/${{ matrix.binary }}
+                  if-no-files-found: error
+
+    release:
+        name: Release
+        needs: build
+        runs-on: ubuntu-latest
+        if: startsWith(github.ref, 'refs/tags/v')
+        permissions:
+            contents: write
+
+        steps:
+            - name: Download Linux binary
+              uses: actions/download-artifact@v4
+              with:
+                  name: proxy-checker-linux
+                  path: artifacts/linux
+
+            - name: Download Windows binary
+              uses: actions/download-artifact@v4
+              with:
+                  name: proxy-checker-windows
+                  path: artifacts/windows
+
+            - name: Mark Linux binary executable
+              run: chmod +x artifacts/linux/proxy-checker
+
+            - name: Create GitHub Release
+              uses: softprops/action-gh-release@v2
+              with:
+                  files: |
+                      artifacts/linux/proxy-checker
+                      artifacts/windows/proxy-checker.exe