Add travis build

.travis.yml

@@ -0,0 +1,15 @@
+language: minimal
+
+env:
+    - IMAGE_NAME=jkz0/qemu
+
+services:
+    - docker
+
+script: docker build -t $IMAGE_NAME .
+
+deploy:
+    provider: script
+    script: .travis/deploy-docker-hub
+    on:
+        tags: true

.travis/deploy-docker-hub

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+set -x
+set -e
+
+echo $DOCKER_HUB_PASSWORD | docker login -u $DOCKER_HUB_USER --password-stdin
+docker tag $IMAGE_NAME $IMAGE_NAME:latest
+docker tag $IMAGE_NAME $IMAGE_NAME:$TRAVIS_TAG
+docker push $IMAGE_NAME:latest
+docker push $IMAGE_NAME:$TRAVIS_TAG