support for custom build flags

README.md

@@ -169,9 +169,14 @@ build:
   # Default is `main.go`
   main: ./cmd/main.go
 
-  # Name of the binary. Default is the name of the project directory.
+  # Name of the binary.
+  # Default is the name of the project directory.
   binary_name: program
 
+  # Custom build tags.
+  # Default is empty
+  flags: -tags dev
+
   # Custom ldflags.
   # Default is `-s -w`
   ldflags: -s -w

config/config.go

@@ -28,6 +28,7 @@ type Build struct {
 	Goarch     []string
 	Main       string
 	Ldflags    string
+	Flags      string
 	BinaryName string `yaml:"binary_name"`
 	Hooks      Hooks
 }

pipeline/build/build.go

@@ -49,7 +49,11 @@ func build(name, goos, goarch string, ctx *context.Context) error {
 			return err
 		}
 	}
-	cmd := []string{"go", "build", "-ldflags=" + ldflags, "-o", output, ctx.Config.Build.Main}
+	cmd := []string{"go", "build"}
+	if ctx.Config.Build.Flags != "" {
+		cmd = append(cmd, strings.Split(ctx.Config.Build.Flags, " ")...)
+	}
+	cmd = append(cmd, "-ldflags="+ldflags, "-o", output, ctx.Config.Build.Main)
 	if err := run(goos, goarch, cmd); err != nil {
 		return err
 	}