Deploy PR Docker image

Signed-off-by: Emile Vauge <emile@vauge.com>

.travis.yml

@@ -29,3 +29,4 @@ script:
 - make image
 after_success:
 - make deploy
+- make deploy-pr

Makefile

@@ -85,5 +85,8 @@ fmt:
 deploy:
 	./script/deploy.sh
 
+deploy-pr:
+	./script/deploy-pr.sh
+
 help: ## this help
 	@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z_-]+:.*?## / {sub("\\\\n",sprintf("\n%22c"," "), $$2);printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)

script/deploy-pr.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+set -e
+
+if ([ "$TRAVIS_BRANCH" = "master" ] && [ -z "$TRAVIS_TAG" ]) && [ "$TRAVIS_PULL_REQUEST" = "false" ] && [ "$DOCKER_VERSION" = "1.10.1" ]; then
+  echo "Deploying PR..."
+else
+  echo "Skipping deploy PR"
+  exit 0
+fi
+
+COMMENT=$(git log -1 --pretty=%B)
+PR=$(echo $COMMENT | grep -oP "Merge pull request #\K(([0-9]*))(?=.*)")
+
+if [ -z "$PR" ]; then
+    echo "Unable to get PR number: $PR from: $COMMENT"
+    exit 0
+fi  
+
+# create docker image containous/traefik
+echo "Updating docker containous/traefik image..."
+docker login -e $DOCKER_EMAIL -u $DOCKER_USER -p $DOCKER_PASS
+docker tag containous/traefik containous/traefik:pr-${PR}
+docker push containous/traefik:pr-${PR}
+
+echo "Deployed"