NodeJS doesn't take in account Docker SIGTERM

[Cyril Beslay]

When we docker stop gladys container, the SIGTERM is not taken in account and we don't see these lines

index.js:25 (shutdown) SIGTERM received.
index.js:31 (shutdown) Closing database connection.

node is not the first process and so doesn't receive the SIGTERM

ps aux

PID   USER     TIME  COMMAND
    1 root      0:02 npm run start:prod
   19 root      0:00 node /src/server/node_modules/.bin/cross-env NODE_ENV=production node index.js
   26 root      0:26 node index.js
   67 root      0:00 /bin/sh
   78 root      0:00 ps aux