Update Dockerfile

signalk/Dockerfile

@@ -23,13 +23,14 @@ FROM ${BUILD_FROM}
 # 2 Modify Image #
 ##################
 
+USER root
+WORKDIR /config
+
 # Set S6 wait time
 ENV S6_CMD_WAIT_FOR_SERVICES=1 \
     S6_CMD_WAIT_FOR_SERVICES_MAXTIME=0 \
     S6_SERVICES_GRACETIME=0
 
-USER root
-
 # Correct config location
 # shellcheck ignore=SC2013
 RUN for file in $(grep -sril "/home/node/.signalk" /etc /usr /home); do \