NPM errors from multiple instances of ghost in a docker container

gistfile1.txt

0 info it worked if it ends with ok
1 verbose cli [ '/usr/local/bin/node', '/usr/local/bin/npm', 'start' ]
2 info using npm@1.4.28
3 info using node@v0.10.33
4 verbose config Skipping project config: /ghost/.npmrc. (matches userconfig)
5 verbose run-script [ 'prestart', 'start', 'poststart' ]
6 info prestart ghost@0.5.3
7 info start ghost@0.5.3
8 verbose unsafe-perm in lifecycle true
9 info ghost@0.5.3 Failed to exec start script
10 error ghost@0.5.3 start: `node index`
10 error Exit status 137
11 error Failed at the ghost@0.5.3 start script.
11 error This is most likely a problem with the ghost package,
11 error not with npm itself.
11 error Tell the author that this fails on your system:
11 error     node index
11 error You can get their info via:
11 error     npm owner ls ghost
11 error There is likely additional logging output above.
12 error System Linux 3.8.0-29-generic
13 error command "/usr/local/bin/node" "/usr/local/bin/npm" "start"
14 error cwd /ghost
15 error node -v v0.10.33
16 error npm -v 1.4.28
17 error code ELIFECYCLE
18 verbose exit [ 1, true ]