Update to docker-gen 0.7.3

Dockerfile

@@ -17,7 +17,7 @@ RUN echo "daemon off;" >> /etc/nginx/nginx.conf \
 ADD https://github.com/jwilder/forego/releases/download/v0.16.1/forego /usr/local/bin/forego
 RUN chmod u+x /usr/local/bin/forego
 
-ENV DOCKER_GEN_VERSION 0.7.1
+ENV DOCKER_GEN_VERSION 0.7.3
 
 RUN wget https://github.com/jwilder/docker-gen/releases/download/$DOCKER_GEN_VERSION/docker-gen-linux-amd64-$DOCKER_GEN_VERSION.tar.gz \
  && tar -C /usr/local/bin -xvzf docker-gen-linux-amd64-$DOCKER_GEN_VERSION.tar.gz \

Makefile

@@ -2,7 +2,7 @@
 .PHONY : test
 
 update-dependencies:
-	docker pull jwilder/docker-gen:0.7.1
+	docker pull jwilder/docker-gen:0.7.3
 	docker pull nginx:1.9.12
 	docker pull python:3
 	docker pull rancher/socat-docker:latest

test/docker.bats

@@ -74,7 +74,7 @@ load test_helpers
 		-v $BATS_TEST_DIRNAME/../nginx.tmpl:/etc/docker-gen/templates/nginx.tmpl:ro \
 		--volumes-from bats-nginx \
 		--expose 80 \
-		jwilder/docker-gen:0.7.1 \
+		jwilder/docker-gen:0.7.3 \
 			-notify-sighup bats-nginx \
 			-watch \
 			-only-exposed \