feat(dockerhub): deploy images

fix(travis): add deploy condition

.travis.yml

@@ -10,6 +10,9 @@ services:
   - docker
 
 env:
+  global:
+    - TRAVIS_SECURE_ENV_VARS: true
+
   # VARS:
   # DN: distro name (amazonlinux, archlinux, centos, debian, fedora, opensuse, ubuntu)
   # DV: distro version
@@ -86,8 +89,7 @@ env:
 # adding the inspec license-accepted file as different lines because of
 # https://travis-ci.community/t/multiline-commands-have-two-spaces-in-front-breaks-heredocs/2756/4
 before_install:
-  - gem install inspec
-  - gem install inspec-bin
+  - gem install inspec inspec-bin
   - mkdir -p ~/.chef/accepted_licenses
   - "echo '---' > ~/.chef/accepted_licenses/inspec"
   - "echo 'name: inspec' >> ~/.chef/accepted_licenses/inspec"
@@ -100,21 +102,27 @@ before_install:
 install:
   - export TAG=$(echo ${DN} | sed "s#/#-#g")-${DV}
   - "echo \"Building: ${TAG}\""
-  - |
-    docker build . \
-      --file "Dockerfile.${PI}" \
-      --tag "${TAG}" \
-      --build-arg DISTRO_NAME="${DN}" \
-      --build-arg DISTRO_VERSION="${DV}" \
-      --build-arg SALT_VERSION="${SV}" \
-      --build-arg SALT_INSTALL_METHOD="${SIM}" \
-      --build-arg PYTHON_VERSION="${PV}" \
+  - docker build .
+      --file "Dockerfile.${PI}"
+      --tag "${TAG}"
+      --build-arg DISTRO_NAME="${DN}"
+      --build-arg DISTRO_VERSION="${DV}"
+      --build-arg SALT_VERSION="${SV}"
+      --build-arg SALT_INSTALL_METHOD="${SIM}"
+      --build-arg PYTHON_VERSION="${PV}"
       --build-arg EXTRA_PACKAGES="${EP}"
 
 script:
   - docker run --detach=true --name "inspec-${DN}-${TAG}" "${TAG}" tail -f /dev/null
   - inspec exec test/integration  --input py_version="${PV}" salt_version="${SV}" --target=docker://"inspec-${DN}-${TAG}"
 
+# Using after_success because deploy does not support docker.
 after_success:
-  # - "echo \"${DOCKERHUB_PASSWORD}\" | docker login -u \"${DOCKERHUB_USER}\" --password-stdin"
-  - "echo docker push ${DOCKERHUB_USER}/salt-${SV}-py${PV}:${TAG}"
+  - test $TRAVIS_BRANCH = "master" &&
+    echo Push to DockerHub
+  - test $TRAVIS_BRANCH = "master" &&
+    echo "${DOCKERHUB_PASSWORD}" | docker login -u "${DOCKERHUB_USER}" --password-stdin
+  - test $TRAVIS_BRANCH = "master" &&
+    docker tag ${TAG} ${DOCKERHUB_USER}/salt-${SV}-py${PV}:${TAG}
+  - test $TRAVIS_BRANCH = "master" &&
+    docker push ${DOCKERHUB_USER}/salt-${SV}-py${PV}:${TAG}