Mongorestore in a Dockerfile

Question

I want to create a Docker image that starts a mongo server and automatically restores from a previous mongodump on startup.

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Here is my Dockerfile for

Answer 1

You probably don't want to use this for production but it does what you need:

== Dockerfile ==
FROM mongo:3

COPY restore.sh /restore.sh
COPY ./mongodump /dump/

ENTRYPOINT /restore.sh

then

== restore.sh ==
#!/usr/bin/env bash

# Execute restore in the background after 5s
# https://docs.docker.com/engine/reference/run/#detached--d
sleep 5 && mongorestore /dump &

# Keep mongod in the foreground, otherwise the container will stop
docker-entrypoint.sh mongod