Docker container uses massive amount of memory to boot (150MB)

[danthegoodman1]

docker run -it --rm denoland/deno:2.1.5 repl

150MB from docker container stats:

For reference, I observed the following for other container images:

• docker run -it --rm python:3.12 python: 11MB
• docker run -it --rm node:22 node: 11MB

[nathanwhit]

The primary source of memory usage is the typescript compiler, which deno runs to provide auto completions for the REPL. This is the same way that deno's LSP provides completions to editors. I'm not sure about python, but node dynamically searches prototypes at runtime to provide completions (which is much less intensive than running TSC for type information).

The more fair comparison would be how much memory it takes to run an empty file.