Document logging from Docker container

[robfromboulder]

@monrax did the initial work here, I'm trying to reproduce results and get the docs right 🤷‍♂️

Download agent binary:

wget https://github.com/resurfaceio/logger-ebpf/releases/download/v1.1.0/ebpf-logger-amd64

Copy agent binary to running container:

docker cp ebpf-logger-amd64 mycontainer:/

Connect to running container as root:

docker exec --privileged -it -u root mycontainer sh

Run agent binary, with your value for GL_APISECURITY_HOST:

chmod +x /ebpf-logger-amd64 && USAGE_LOGGERS_EBPF_EXPATH="/lib/x86_64-linux-gnu/libssl.so.3" USAGE_LOGGERS_EBPF_ROLE="server" USAGE_LOGGERS_RULES="include debug" USAGE_LOGGERS_URL="https://GL_APISECURITY_HOST/fluke/message" /ebpf-logger-amd64

When I run this in my test environment, this last command fails:

2025/04/22 05:58:23 main.go:102: executable:  /lib/x86_64-linux-gnu/libssl.so.3
2025/04/22 05:58:23 loader.go:49: Loading eBPF objects: field EntrySslAccept: program entry_ssl_accept: map traces: map create: operation not permitted (MEMLOCK may be too low, consider rlimit.RemoveMemlock)
2025/04/22 05:58:23 panic.go:787: All done. Bye!
panic: runtime error: index out of range [0] with length 0