add Makefile

Makefile

@@ -0,0 +1,41 @@
+GITCOMMIT := $(shell git rev-parse --short HEAD 2>/dev/null)
+BUILD_FLAGS := -v -ldflags "-w -s"
+
+BUILD_DIR = build
+BINARY_NAME = terrascan
+
+
+# default
+default: build
+
+
+# build terrascan binary
+build: clean
+	@mkdir -p $(BUILD_DIR) > /dev/null
+	go build ${BUILD_FLAGS} -o ${BUILD_DIR}/${BINARY_NAME} cmd/terrascan/main.go
+	@echo "terrascan binary created in ${BUILD_DIR} directory"
+
+
+# clean build 
+clean:
+	@rm -rf $(BUILD_DIR)
+
+
+# run all validation tests
+validate: gofmt govet golint
+
+
+# gofmt validation
+gofmt:
+	./scripts/validate-gofmt.sh
+	./scripts/fix-gofmt.sh
+
+
+# golint validation
+golint:
+	./scripts/validate-golint.sh
+
+
+# govet validation
+govet:
+	./scripts/validate-govet.sh