Ignore debug output

[nollium]

When running any binaries compiled by dockerc on my system, the following debug output is displayed:

newuidmap failed, falling back to single user mapping
newgidmap failed, falling back to single group mapping
unknown argument ignored: lazytime

A quick code search brought up this snippet of the main.zig file:

This seems to be debug logging, it would be useful to have an option to disable it when compiling the binary.

For context: my use case is to use dockerc for non-competitive, beginner focused CTF challenges, the extra debugging output might confuse noob players, and I wish to avoid that.

Currently I have no other choice than patching dockerc source code and building it myself, which is fine, I just wanted to let you know someone had this use-case

[lars18th]

Hi,

I recommend to add different runtime log output levels to the dockerc command.

For example with a new -l --loglevel parameter:

• -l 0: It disables all logs related to the container runtime.
• -l 1: Default mode. Like now it prints some info.
• -l 2: It prints the steps executed in the container runtime. Useful for debugging the container.
• -l 3: Full verbose mode with all trace of the container runtime.

I wish the developer would want to take this into account.