update travis script

- fix broken script
- set go version 1.13.7

.travis.yml

@@ -7,7 +7,7 @@ branches:
   - /^issue-\d+/
 
 go:
-  - "1.13.x"
+  - "1.13.7"
 
 sudo: false
 
@@ -23,27 +23,7 @@ script:
   - make lint
   - make coverage
   - bash <(curl -s https://codecov.io/bash)
-  # Docker build and deployment
-  # Push only if:
-  # - triggered by a push to master
-  # - triggered by a push to a tag
-  # - not triggered by a pull request
-  # https://docs.travis-ci.com/user/environment-variables/
-  - |
-    export VERSION=${TRAVIS_TAG:-${TRAVIS_BRANCH}}
-    echo "Building app version $VERSION"
-
-    make all VERSION=${VERSION}
-    make docker VERSION=${VERSION}
-
-    echo ${DOCKER_PASSWORD} | docker login --password-stdin -u ${DOCKER_USER}
-
-    if [[ -n ${TRAVIS_TAG} || ${TRAVIS_BRANCH} == "master" ]]; then
-      docker-tag-latest VERSION=${VERSION}
-      make docker-push VERSION=latest
-      make docker-push VERSION=${VERSION}
-    fi
-
+  - bash ./travis.sh || travis_terminate 1
 deploy:
   provider: releases
   api_key: $GITHUB_OAUTH_TOKEN

travis.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+if [[ -n ${TRAVIS_PULL_REQUEST_BRANCH} ]]; then
+  export VERSION=${TRAVIS_PULL_REQUEST_BRANCH}
+else
+  export VERSION=${TRAVIS_TAG:-${TRAVIS_BRANCH}}
+fi
+
+echo "Building app version $VERSION"
+
+make all VERSION=${VERSION}
+make docker VERSION=${VERSION}
+
+if [[ -n ${TRAVIS_PULL_REQUEST_BRANCH} ]]; then
+  echo "Skip building docker images"
+  exit 0
+fi
+
+echo ${DOCKER_PASSWORD} | docker login --password-stdin -u ${DOCKER_USER}
+
+if [[ -n ${TRAVIS_TAG} || ${TRAVIS_BRANCH} == "master" ]]; then
+  make docker-tag-latest VERSION=${VERSION}
+  make docker-push VERSION=latest
+  make docker-push VERSION=${VERSION}
+fi
+