Added a deploy stage to automate the deployment to the official images repo

.travis.yml

@@ -14,6 +14,12 @@ addons:
 
 script: ./test-build.sh $NODE_VERSION $VARIANT
 
+stages:
+  - Test
+  - Build
+  - name: Deploy
+    if: branch = master
+
 jobs:
   include:
     - stage: Test
@@ -37,6 +43,9 @@ jobs:
           packages:
             - shellcheck
 
+    - stage: Deploy
+      script: ./generate-stackbrew-library.sh
+
     # Docker Build #
     - stage: Build
       env:

travis.yml.template

@@ -12,6 +12,12 @@ addons:
 
 script: ./test-build.sh $NODE_VERSION $VARIANT
 
+stages:
+  - Test
+  - Build
+  - name: Deploy
+    if: branch = master
+
 jobs:
   include:
     - stage: Test
@@ -35,4 +41,7 @@ jobs:
           packages:
             - shellcheck
 
+    - stage: Deploy
+      script: ./generate-stackbrew-library.sh
+
     # Docker Build #