Fix health of gateway image

Author: piyushroshan

deploy/docker/docker-compose.yml

@@ -254,7 +254,7 @@ services:
     #ports:
     #  - "${LISTEN_IP:-127.0.0.1}:8443:443" # https
     healthcheck:
-      test: echo -n "GET / HTTP/1.1\n\n" > /dev/tcp/127.0.0.1/443
+      test: bash -c 'echo -n "GET / HTTP/1.1\n\n" > /dev/tcp/127.0.0.1/443'
       interval: 15s
       timeout: 15s
       retries: 15