This project bundles govcsim which is a vCenter Server and ESXi API based simulator written using govmomi (vSphere SDK for Go) into an easy to use Docker Container. This is a slight enhancement to the original work by Brian Burke which can be found here

docker build -t lamw/govcsim .

docker pull lamw/govcsim

The simulator can simulate either a vCenter server or an ESXi server, starting it with default values assumes vCenter server.

docker run --rm -d -p 443:443 lamw/govcsim

type=vcenter
virtualmachine=20
host=30
datacenter=2
cluster=3
folder=5
datastore=6
resourcepool=7
network=8
standalonehost=9
storagecluster=10
vapp=11

Note: The filename of the VC Sim configuration file can be named anything you want

docker run --rm -d -p 443:443 --env-file vcenter-vcsim.conf lamw/govcsim

type=esxi
virtualmachine=20
datastore=6
resourcepool=7
network=8

Start it as a ESXi server passing in configuration file esxi-vcsim.conf:

docker run --rm -d -p 443:443 --env-file esxi-vcsim.conf lamw/govcsim

docker ps

docker stop [PID]