added forked PR stop before token usage

Author: DvirDukhan

.circleci/config.yml

@@ -1,20 +1,33 @@
 # Golang CircleCI 2.0 configuration file
 #
 # Check https://circleci.com/docs/2.0/language-go/ for more details
-version: 2
+version: 2.1
+commands:
+  early_return_for_forked_pull_requests:
+    description: >-
+      If this build is from a fork, stop executing the current job and return success.
+      This is useful to avoid steps that will fail due to missing credentials.
+    steps:
+      - run:
+          name: Early return if this build is from a forked PR
+          command: |
+            if [ -n "$CIRCLE_PR_NUMBER" ]; then
+              echo "Nothing to do for forked PRs, so marking this step successful"
+              circleci step halt
+            fi
 jobs:
   build:
     docker:
       - image: circleci/golang:1.9
 
       - image: redislabs/redisgraph:edge
-        port: 6379:6379
 
     working_directory: /go/src/github.com/RedisGraph/redisgraph-go
     steps:
       - checkout
       - run: go get -v -t -d ./...
       - run: go test -v ./... -race -coverprofile=coverage.txt -covermode=atomic
+      - early_return_for_forked_pull_requests
       - run: bash <(curl -s https://codecov.io/bash) -t ${CODECOV_TOKEN}
 
 workflows: