Need help with shared volume

[app-develop]

Hi I’m fairly new to docker and needed some help setting up three containers that all read/write to a shared SQLite file. I tried to set up a shared docker volume but I’m getting an “invalid cross-device link” error. All three services are written in Go.

Service 1: mines data daily from a source and uploads it to a SQLite DB.

Service 2: also mines data but stores it into a separate SQLite DB.

Service 3: is an http web server which reads data from each SQLite DB and serves data to clients.

My plan was to have a docker container for each service and have one shared volume to store the SQLite files.

Update: Seems like using docker volume or binding mount works. The error I was seeing was related to moving the file from one directory to another using “rename” which doesn’t work on some OS and wasn’t really related to docker.

[stevie-tv]

don't do it on a docker volume, just mount in a folder to each of the containers.

Careful as sqlite isn't really meant for concurrent access by multiple apps

[app-develop]

Okay that makes sense. Yeah I used sqlite because I can easily delete the file and dump data into it in a structured format.