Skip Travis CI deploy job earlier

Author: PeterDaveHello

.travis.yml

@@ -95,6 +95,12 @@ jobs:
         - git diff --stat --exit-code .travis.yml
 
     - stage: Deploy
+      before_script:
+        - |
+          if ! git diff --name-only "$TRAVIS_COMMIT_RANGE" -- | grep -Eq "Dockerfile$"; then
+            echo "Skip deployment as none of the Dockerfiles has been changed."
+            exit
+          fi
       script:
         - ./generate-stackbrew-pr.sh "$TRAVIS_COMMIT_RANGE"
 

travis.yml.template

@@ -93,6 +93,12 @@ jobs:
         - git diff --stat --exit-code .travis.yml
 
     - stage: Deploy
+      before_script:
+        - |
+          if ! git diff --name-only "$TRAVIS_COMMIT_RANGE" -- | grep -Eq "Dockerfile$"; then
+            echo "Skip deployment as none of the Dockerfiles has been changed."
+            exit
+          fi
       script:
         - ./generate-stackbrew-pr.sh "$TRAVIS_COMMIT_RANGE"