Add multiplatform support (#1336)

* Add multiplatform support

Using the experimental manifest support in docker one can
create a manifest that contain references to other images/tags
build for various architectures. When someone pulls koenkk/zigbee2mqtt
correct image is automatically selected.

Please note that experimental cli support needs to be enabled.

* Update docker.sh

.travis/docker.sh

@@ -14,6 +14,19 @@ build_and_push() {
   docker push $DOCKER_USERNAME/zigbee2mqtt:$1
 }
 
+push_manifest() {
+  docker manifest create $DOCKER_USERNAME/zigbee2mqtt:latest$1 $DOCKER_USERNAME/zigbee2mqtt:latest$1 $DOCKER_USERNAME/zigbee2mqtt:arm32v6$1 $DOCKER_USERNAME/zigbee2mqtt:arm64v8$1
+
+  docker manifest annotate $DOCKER_USERNAME/zigbee2mqtt:latest$1 $DOCKER_USERNAME/zigbee2mqtt:arm32v6$1 --os linux --arch arm --variant v6
+  docker manifest annotate $DOCKER_USERNAME/zigbee2mqtt:latest$1 $DOCKER_USERNAME/zigbee2mqtt:arm64v8$1 --os linux --arch arm64 --variant v8
+
+  docker manifest inspect $DOCKER_USERNAME/zigbee2mqtt:latest$1
+
+  docker manifest push -p $DOCKER_USERNAME/zigbee2mqtt:latest$1
+
+  docker run --rm mplatform/mquery $DOCKER_USERNAME/zigbee2mqtt:latest$1
+}
+
 # Only update Docker images for:
 # - dev branch
 # - version release
@@ -31,6 +44,10 @@ then
   tag_push "$TRAVIS_TAG-arm32v6" "arm32v6"
   tag_push "$TRAVIS_TAG-arm64v8" "arm64v8"
   tag_push "$TRAVIS_TAG" latest
+
+  # Push manifest
+  push_manifest ""
+
 elif [ "$TRAVIS_BRANCH" = "dev" -a "$TRAVIS_PULL_REQUEST" = "false" ]
 then
   echo "Updating docker images for dev branch!"
@@ -38,6 +55,10 @@ then
   build_and_push latest-dev docker/Dockerfile.amd64 amd64
   build_and_push arm32v6-dev docker/Dockerfile.arm32v6 arm
   build_and_push arm64v8-dev docker/Dockerfile.arm64v8 arm64
+
+  # Push manifest
+  push_manifest "-dev"
+
 else
   echo "Not updating docker images, triggered by pull request or not on master/dev branch"
 fi