Docker composer is in bin but not working

[brianroyce]

So, the composer does not work on Docker, and you can not install Symfony Transports. However, it is not working, and I cannot update the container. Would you happen to have any updates on this? I discovered this issue because I was trying to get Sendgrid set up. I was using Portainer to run this, but I can't get Symfony to install it.