fix Issue #1; feature webadmin auto-add admin user

[uplight-dev]

Fixes Issue #1, adds auto adding of admin user to webadmin, at startup.

References:

docker-compose.yml / memlock: -1

• Support ulimits memlock for compatibility with docker-compose and elasticsearch images docker-archive/compose-cli#1558
• https://stackoverflow.com/questions/54387308/docker-compose-yaml-option-to-pass-the-ulimit-parameters-rtprio-and-memlo
• https://bartwullems.blogspot.com/2019/12/running-elasticsearch-in-dockermemlock.html

Dockerfile

• fix for: "fatal error: 'asm/types.h' file not found"

  • memleak reports asm/types.h file not found iovisor/bcc#3731 (comment)
  • RUN ln -s /usr/include/x86_64-linux-gnu/asm /usr/include/asm

• fix for missing libbpf-dev

  • Unable to build fatal error: 'bpf/bpf_endian.h' file not found krisnova/boopkit#16 (comment)
  • RUN apt-get install -y build-essential llvm clang libbpf-dev npm; added libbpf-dev

[lachlan2k]

LGTM, thanks!