fix: #52 Supressed warning for CMD using shell format.

Author: vogoltsov

helix-p4d/Dockerfile

@@ -59,5 +59,7 @@ COPY p4-users             /p4-users
 HEALTHCHECK --interval=1m --timeout=5s --start-period=30s \
     CMD p4 info
 
+SHELL ["/bin/bash", "-c"]
 ENTRYPOINT ["/docker-entrypoint.sh"]
+# Using shell-form is required for ${P4PORT} to be correctly resolved (not working in JSON format).
 CMD gosu perforce p4d -p "${P4PORT}"

helix-swarm/Dockerfile

@@ -55,4 +55,4 @@ HEALTHCHECK --interval=1m --timeout=5s --start-period=30s \
     CMD supervisorctl status all
 
 ENTRYPOINT ["/docker-entrypoint.sh"]
-CMD /usr/bin/supervisord --configuration /etc/supervisor/supervisord.conf
+CMD ["/usr/bin/supervisord", "--configuration", "/etc/supervisor/supervisord.conf"]