add format command on Makefile and remove vendor

This commit adds the format command to make it easier to be compliant to golangci-lint issues

Signed-off-by: Ian Cardoso <osodracnai@gmail.com>

CONTRIBUTING.md

@@ -88,3 +88,18 @@ Signed-off-by: Jane Smith <jane.smith@example.com>
 
 In most cases, you can add this signoff to your commit automatically with the
 `-s` flag to `git commit`. Please use your real name and a reachable email address.
+
+
+## Golangci-lint ##
+
+There is a CI check for formatting on our code, you'll need to install `goimports` to be able to attend this check, you can do it by running the command:
+
+```
+go install golang.org/x/tools/cmd/goimports@latest
+```
+
+then run:
+
+```
+make format
+```

Makefile

@@ -1,4 +1,6 @@
 TARGETS := $(shell ls scripts | grep -v \\.sh)
+GO_FILES ?= $$(find . -name '*.go' | grep -v generated)
+
 
 .dapper:
 	@echo Downloading dapper
@@ -12,7 +14,6 @@ $(TARGETS): .dapper
 
 .PHONY: deps
 deps:
-	go mod vendor
 	go mod tidy
 
 release:
@@ -32,3 +33,7 @@ binary-size-check:
 .PHONY: image-scan
 image-scan:
 	scripts/image_scan.sh $(IMAGE)
+
+format:
+	gofmt -s -l -w $(GO_FILES)
+	goimports -w $(GO_FILES)