Update config.yml

Author: gkorland

.circleci/config.yml

@@ -3,6 +3,20 @@
 # Check https://circleci.com/docs/2.0/language-java/ for more details
 #
 version: 2
+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:
@@ -38,8 +52,10 @@ jobs:
       # run tests!
       - run: mvn integration-test 
       - run: mvn cobertura:cobertura          
-      - run: bash <(curl -s https://codecov.io/bash) -t ${CODECOV_TOKEN}                
 
+      - early_return_for_forked_pull_requests
+      
+      - run: bash <(curl -s https://codecov.io/bash) -t ${CODECOV_TOKEN}                
       - run: mvn -s .circleci.settings.xml -DskipTests deploy
 
 workflows: