Update gitpod config file and Makefile

Author: devlights

.gitpod.yml

@@ -1,9 +1,10 @@
 
-image:
-  file: .gitpod.Dockerfile
+image: gitpod/workspace-go:latest
 tasks:
   - name: prepare
     init: make prepare
+  - name: install go-task
+    init: brew install go-task/tap/go-task
   - name: show go version
     command: go version
 

Makefile

@@ -4,7 +4,6 @@ all: clean build test
 
 prepare: prepare-release
 	go install honnef.co/go/tools/cmd/staticcheck@latest
-	go install github.com/go-task/task/v3/cmd/task@latest
 
 prepare-release:
 	go mod download