Added all task as first task to makefile

Makefile

@@ -1,4 +1,4 @@
-.PHONY: clean deps fmt vet test docker
+.PHONY: all clean deps fmt vet test docker
 
 EXECUTABLE ?= drone-email
 IMAGE ?= plugins/$(EXECUTABLE)
@@ -7,6 +7,8 @@ CI_BUILD_NUMBER ?= 0
 LDFLAGS = -X "main.buildDate=$(shell date -u '+%Y-%m-%d %H:%M:%S %Z')"
 PACKAGES = $(shell go list ./... | grep -v /vendor/)
 
+all: deps build test
+
 clean:
 	go clean -i ./...