add support for 'reuse' mode to allow act to be used for a fast local task runner

.github/actions/check/entrypoint.sh

@@ -1,10 +1,4 @@
 #!/bin/sh 
 
-#GOPATH=/go
-#PATH=${GOPATH}/bin:/usr/local/go/bin:${PATH}
-
-go vet ./...
-golint -set_exit_status ./...
-staticcheck ./...
-gocyclo -over 10 .
+golangci-lint run
 go test -cover ./...