What powers this blog?

Ghost and Docker!

Run Ghost blog in a Docker container by doing:

docker run --name ghost-blog -d -p 80:2368 alexellis2/ghost-on-docker:latest

That's it!! Cannot be simpler... (in fact it can ;) )

Will it hold the load?

A quick benchmark using ApacheBench yields a 100-120 request/second:
ab -c 4 -n 1000 http://jmkhael.io/

Server Hostname:        stratus-clay.fr.murex.com
Server Port:            80

Concurrency Level:      4
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      5882000 bytes
HTML transferred:       5626000 bytes
Requests per second:    100.59 [#/sec] (mean)
Time per request:       39.767 [ms] (mean)
Time per request:       9.942 [ms] (mean, across all concurrent requests)
Transfer rate:          577.77 [Kbytes/sec] received

Customizations

Correct the url settings as an example and commit

docker exec -it ghost-blog sh

In the launched shell, manually edit the url field in config.js:

vi config.js

Then commit the changes to a new image:

docker commit ghost-blog ghost-blog-with-url-base