Remove deprecated env vars from container configuration #386
Description
Parent: #384
Some env vars are not needed anymore, or they were added without needing to during the container updagre.
For example:
We do not have UDP and HTTP ports in the Index:
ENV UDP_PORT=${UDP_PORT}
ENV HTTP_PORT=${HTTP_PORT}
We are using the USER_ID to run the container and it's injected at runtime (not build time).
TORRUST_INDEX_RUN_AS_USER
RUN_AS_USER