vscode-ssh | VSCode extension for SSH config files | Configuration Management library

I'm using VSCode Devcontainers to develop a micro-services application and I've been using a Java Devcontainer without issues. But, given the micro-service nature of the project, there are other containers I need to execute (for instance, a postgres db). This is the only container I use to develop, where I install Java-specific extensions, intellisense working, etc. I do NOT have this on my local machine nor do I want to have. Only when coding on the container.

Now, I did some research to shift the use of Devcontainers to docker-compose and start not only the Java devcontainer but also the database. Everything seems to run fine. However, the dev container will alway exit with code 137 and I can't figure out why.

The structure of the code is as follows:

Normally I use this trick to make X work inside docker:

So I'm using the "Remote - SSH" plugin in VSCode to connect to my VPS and edit my code. I lost the connection, then had to hard-reset it after 30+ min. Now I can't access it with VSCode anymore [putty works] and get Could not establish connection to "[vps-ip]". Permission denied (publickey,password). when starting VSCode in ssh up or when reloading the connection.

I also get this log every time.

What would I have to do, to get this to work normally again?

Here is the log I replaced some stuff with [...]

I want to connect to my server via ssh. I have installed the remote dev package in VS Code, I can connect via ssh in VSC terminal, but not via the ssh 'panel'. When I do so, I get: