In order to create the indices programmatically we need to change the
default password for security concerns. To create the user we need to
start the neo4j database. So I decided to provide a bash script that
let us do it once the container are started.
In production we must change the NEO4J_PASSWORD.
Digital Ocean does not support shared directories. So we have to uploads
the images in `/uploads` via `kubectl cp` or something similar.
Likewise, it is not possible to share the exported mongodb .json files
with neo4j container. Therefore let's install `cypher-shell`, included
in `neo4j` package, to directly open a neo4j connection and bulk import
the data.
`rsync` is faster on multiple runs. The `--update` flag will only
download newer images and does not overwrite existing files. Thus, it will
only download missing images.
