ci: trigger on freebsd-ci branch, add FreeBSD self-hosted job

Author: thegushi

.github/workflows/ci.yml

@@ -2,11 +2,32 @@ name: CI
 
 on:
   push:
-    branches: [ develop ]
-  pull_request:
-    branches: [ develop ]
+    branches: [ freebsd-ci ]
 
 jobs:
+  build-test-freebsd:
+    runs-on: [self-hosted, freebsd]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Bootstrap build system
+        run: autoreconf -fvi
+
+      - name: Configure
+        run: |
+          ./configure --enable-lua \
+            CPPFLAGS='-I/usr/local/include/lua54' \
+            LUA_LIBS='-llua-5.4' \
+            CFLAGS='-g -O2 -Wno-pointer-sign' \
+            --with-test-socket=unix:/tmp/opendkim-test.sock
+
+      - name: Build
+        run: gmake -j$(sysctl -n hw.ncpu)
+
+      - name: Test
+        run: gmake check
+
   build-test-linux:
     runs-on: ubuntu-latest