Add travis CI for docker build

.travis.yml

@@ -0,0 +1,21 @@
+sudo: required
+
+services:
+    - docker
+
+before_install:
+    - sudo apt update && sudo apt install make -y
+    - git clone https://github.com/estesp/manifest-tool && cd manifest-tool && sudo make && sudo make install && cd .. && rm -Rf manifest-tool
+    - docker run --rm --privileged multiarch/qemu-user-static:register
+    - sudo apt install -y qemu qemu-user-static qemu-user binfmt-support
+
+script:
+    - echo "$DOCKER_HUB_PASSWORD" | docker login -u "$DOCKER_HUB_LOGIN" --password-stdin
+    - make build
+
+deploy:
+    provider: script
+    script:
+        - make publish latest
+    on:
+        branch: master