Damselfly

Damselfly

https://github.com/Webreaper/Damselfly/releases/download/4.1.0/damselfly-server-linux-4.1.0.zip

Non-containerized install instructions here

Create user and make it group photos:

groupadd photos
useradd -d /data/daemons/damselfly -m -g photos damselfly
su - damselfly
wget https://github.com/Webreaper/Damselfly/releases/download/4.1.0/damselfly-server-linux-4.1.0.zip
mkdir damselfly
cd damselfly
unzip damselfly-server-linux-4.1.0.zip

(the release zip file requires a sub-folder to store neatly all files)

In order for Damselfly to work you need to install some dependencies, which can be found in the Docker file.

There you go:

emerge -s media-fonts/liberation-fonts dev-dotnet/libgdiplus media-gfx/dcraw

The supposed libgmp1 dependency is satisfied by adding openmp useflag to GCC (see here) which should be enabled by default in Gentoo.