chore(repo): add local workflow targets

Co-Authored-By: Virgil <virgil@lethean.io>

.gitignore

@@ -4,3 +4,9 @@
 # Knowledge base
 KB/
 .core/
+
+# Local Go tooling caches
+.cache/
+.gocache/
+.gomodcache/
+.gopath/

Makefile

@@ -0,0 +1,30 @@
+.PHONY: build vet test cover tidy clean
+
+override GOCACHE := $(CURDIR)/.cache/go-build
+override GOPATH := $(CURDIR)/.cache/go
+GO ?= go
+
+GO_ENV = GOCACHE=$(GOCACHE) GOPATH=$(GOPATH)
+
+build:
+	@mkdir -p $(GOCACHE) $(GOPATH)
+	@$(GO_ENV) $(GO) build ./...
+
+vet:
+	@mkdir -p $(GOCACHE) $(GOPATH)
+	@$(GO_ENV) $(GO) vet ./...
+
+test:
+	@mkdir -p $(GOCACHE) $(GOPATH)
+	@$(GO_ENV) $(GO) test ./... -count=1 -timeout 120s
+
+cover:
+	@mkdir -p $(GOCACHE) $(GOPATH)
+	@$(GO_ENV) $(GO) test -cover ./...
+
+tidy:
+	@mkdir -p $(GOCACHE) $(GOPATH)
+	@$(GO_ENV) $(GO) mod tidy
+
+clean:
+	@rm -rf $(CURDIR)/.cache $(CURDIR)/.gocache $(CURDIR)/.gomodcache $(CURDIR)/.gopath

README.md

@@ -45,6 +45,17 @@ go test -bench=. ./...
 go build ./...
 ```
 
+For repeatable local runs in a clean workspace, the repo also ships a
+`Makefile` with the standard workflow targets:
+
+```bash
+make build
+make vet
+make test
+make cover
+make tidy
+```
+
 ## Licence
 
 European Union Public Licence 1.2 — see [LICENCE](LICENCE) for details.