convert mongo standalone to replicaset in docker

[scne]

I've a Docker instance with mongo. This run as standalone configuration. Now I would to change entrypoint.sh to run itself as replica set following official guide standalone to replica set

Any suggestion? I've tried to manually setting up entrypoint.sh but it have crashed my container.

[yosifkit]

As far as I can tell, you shouldn't need to change the entrypoint. As long as you have the data accessible to a new container, just run it with the --replSet flag:

$ docker run -d --name some-mongo -v /path/to/my/data/dir:/data/db mongo --replSet rs0
$ # then connect to it with a mongo shell:
$ docker run -it --link some-mongo:mongo --rm mongo mongo mongo/myDatabase
> rs.initiate()

[scne]

Great!