Files:
- Remove dependency of having `libnss_wrapper.so` libraries directly in the image. Instead, use the libraries provided with their respective packages. This fixes the current 32-bit version being broken and ensures the libraries stay up to date with their respective packages.
- Slight change to passwd.template to accommodate variable name change.
Dockerfile:
- Change the base image to Debian, which from testing appears to run cleaner and faster for Arma. It also should yield a smaller image.
- Fix depreciated `ENV` call format.
- Removed un-needed packages.
- Added iproute2 package.
- Consolidated the NSS Wrapper setup to a commented group of lines to make understanding it's purpose and setup more clear.
- Added shell flag to `useradd` command.
Entrypoint:
- General cleanup.
- Changed `LD_PRELOAD`s to point to package-provided library file locations.
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