Just faced this problem, and it was i minified installation problem..i ran docker exec --user="root" -it <docker> unminimize and now i can connect to outter world, apt install or anything else..
Hello, i am facing a problem with Plesk API when i fetch and deploy from Git on multiple domains. The request is being made from another server (used to do it from the same, but thought that that was causing the 502), i also tried to put inside a single API call multiple fetch/deploy (domains)...