Test / document / improve behavior when you run two enclaves at once

[russellhaering]

No description provided.

[robszumski]

Looking into this briefly. I would not have guessed that the first thing you could encounter would be our own port conflicts...but at least it fails fast? Never even attempts to touch an enclave :)

First enclave:

$ docker run  \
  -d  \
  --name enclave  \
  --device=/dev/nitro_enclaves:/dev/nitro_enclaves:rw  \
  -p 8001:8001  \
   us-docker.pkg.dev/edgebit-containers/containers/no-fly-list:enclave-latest
# running perfectly

Second enclave:

$ docker run  \
  --name enclave2  \
  --device=/dev/nitro_enclaves:/dev/nitro_enclaves:rw  \
  -p 8002:8002  \
  us-docker.pkg.dev/edgebit-containers/containers/no-fly-list:enclave-latest
 INFO  enclaver::run > starting egress proxy on vsock port 17002
 ERROR enclaver      > error running enclave: Address in use (os error 98)