Make custom certificates to work with non-Sentry containers

[aldy505]

Problem Statement

Right now, we have a Custom CA roots section on the docs. Sadly, this is only for sentry Docker image. We have lots of other containers that need to connect to the outside world probably with custom certificate authority. We should support that!

The hardest thing to figure out is Relay and Symbolicator, since both of them are using distroless.

Solution Brainstorm

No response

[linear]

SELF-90

[mxtuma]

For symbolicator I found a workaround.
Using update-ca-certificate build somewhere ca-certificates.crt file with all custom and widely trusted certificates (for example on hosting machine).
Then mount this ca-certificates.crt into symbolicator via docker-compose.yml and create new environment variable SSL_CERT_FILE to point this certificate file.