For FreshRSS, if you want to run the development version on localhost:
apt update && apt install build-essential git
Install Docker: https://docs.docker.com/engine/install/ubuntu/
Clone FreshRSS repository, run make start and finish the installation: https://freshrss.github.io/FreshRSS/en/developers/02_First_steps.html
Looks like a good starting point for municipalities implementing live bus location maps.
The codebase audit link at the bottom is also a really good read!
I agree that incompatibility of most Android devices with free OS development is a huge problem, and that Android devices taking up an increasing share of all computers is a problem for FOSS rather than a benefit, despite the use of the Linux kernel. In shops around me, none of the phones affordable for someone with a 400 EUR / month salary will ever have LineageOS support, meaning that after two years they'll all end up running abandoned, outdated, proprietary operating system forks, despite nothing technically preventing these capable computers from running a secure, up-to-date free OS for a few more years. This isn't because of any issue on the LineageOS side, but because the entire Android device ecosystem is fixated on producing planned obsolescence and locking the user in.
It's like they don't understand the reason for this success is how different their road taken has been compared to all-in on AI companies.
Haven't had memory issues on my Windows 11 laptop so I don't check how much is free. On the other hand, free disk space is jumping between 0 and 10 GB without notification as to what appears or disappears. This is annoyingly unreliable because the space often gets closer to 0 right at the time when I need to Syncthing files with others.
Remembered that I made such a tool for myself ten years ago. Dusted off a backup, updated dependencies (and replaced some), refactored somewhat, changed license to AGPL and uploaded here: https://codeberg.org/nykula/imgie
Should be very easy to install because the backend is just ImageMagick and SQLite.
Beware of a 250M node_modules, though. My code is less than 1K lines in the initial commit, but the linters, bundlers etc are the same as I use for big projects.
Note: Lufi encrypts uploaded files and lets one share a link containing a decryption key. It doesn't let one expose images for other websites to embed. Thus a good tool but not for OP's purpose?
Slink might be easy enough to set up with Docker: https://docs.slinkapp.io/getting-started/02-quick-start/
Upd 22:04: tried setting it up with Podman instead of Docker, and the instructions didn't work, first because of missing directories and then a permission issue. However, this can be because I tried on WSL rather than a dedicated GNU/Linux box.
Thanks for a detailed response. It feels weird that in a globalized world an attack on a people isn't felt by others as an attack on someone they know, with whom they or their friends directly talk online, whose loss would personally affect their projects and friend circles. I admit I also don't know many names from African countries, for example, or from Palestine, or even from some EU regions. Inequality of recognition and, as a consequence, a lack of personally felt solidarity, is definitely a weakness of the world-system we live in; well, not for the system itself but for the invaded peoples.
I understand your position, despite disagreeing with it, as it was once mine as well. Would you mind answering two questions on a related, but different topic, closer to OP? First, when a more authoritarian party comes to rule in your country, are you confident they'll keep conscription more-or-less volunteer, or will one of the first things they do, besides stripping minority rights, be making refusal punishable, canceling alternative service options, widening the recruitment age range and making most people with disabilities not "serious" enough serve as well? Second, since the war on Europe has been ongoing for twelve years, why wait until your country is invaded, and not go here to help defend so that it doesn't get to the point when your state or a neighboring state of yours is invaded?
I do blame few EU citizens coming to help fight against the empire, for Ukrainians and Finns etc having to carry almost the entire weight. This isn't a matter of conscription however, fuck conscription due to all the abuse it involves. International volunteer effort is needed.