Similar question to:
https://forums.unraid.net/topic/135327-need-help-how-to-install-webodm-opendronemaps-on-unraid/

Starting a new topic as the prior is two years old.

I've been able to follow the instructions up to the point of doing the Compose Up portion, but I get the following error:
WARN[0000] The "WO_DB_DIR" variable is not set. Defaulting to a blank string.

invalid spec: :/var/lib/postgresql/data:Z: empty section between colons

I'm assuming the WARN isn't a huge issue, but the second is obviously an issue.

Any help would be appreciated.

Thanks.

Not sure if you're still looking for the answer, but I just figured this out and figured I would share.

You need to add an additional variable to the .env file. It's looking for WO_DB_DIR, so I just added it below the WO_MEDIA_DIR and (since I used the information on that post you linked), set it to a similar directory. Mine looks like this:

WO_DB_DIR=/mnt/user/appdata/webODM/db

Just in case anyone else is looking for this, I feel like I should document the other step as well since opendronemaps nodes are depreciated. From my limited understanding, there are a few different processing nodes that can be used. It looks like WebODM, if downloaded to Windows or MacOS, defaults to creating a NodeODX node, so that's what I went with here. I generally copied what was done in the linked post. Here are the settings I used to create the container. I'm sure the network type can be changed. Change the path to be uniform with whatever you did with WebODM variables. Note: I did not choose a template. Also note: I am not an expert in any of this, but it worked for me.

After this, just open WebODM and set the processing node information and you should be good to go. I ran a test last night and everything worked as expected.