50ohm.se – local workspace

Three git repos live here as submodules (branch sv in each; the German DARC originals are on main):

dir	what	licence
50ohm/	static-site generator (Python)	AGPL
50ohm-contents-dl/	Swedish course content, drawings, TikZ sources	CC BY 4.0
50ohm-ansible/	playbook for deploying to a Debian server	–

Everything else in this folder (docker-compose.yml, docker/, Makefile, .env, site-build/) is the deployment tooling of the 50ohm-deploy repo (.env and site-build/ are git-ignored).

Local deploy

$ make build      # generate the site -> ./site-build   (about 15 s)
$ make up         # serve it on http://127.0.0.1:8150   (port: WEB_PORT in .env)
$ make down

The repos are bind-mounted, not copied into images: edit a template, section or toc file, run make build, reload the browser (nginx sends no-store). The builder container runs as your user (HOST_UID/HOST_GID in .env), so no root-owned files end up in the repos. site-build/ is outside all repos.

Drawings (LaTeX)

The SVGs in 50ohm-contents-dl/contents/drawings/ are generated from the .tex files next to them (LuaLaTeX + CircuiTikZ -> PDF -> pdftocairo). No TeX install is needed on the host:

$ make drawings                # rebuild every drawing whose .tex is newer than its .svg  (JOBS=4)
$ make drawings-one ID=502     # one drawing
$ make drawings-all            # everything (slow)

The first docker compose --profile latex build latex downloads TeX Live (a few GB, ~5 min). Each drawing keeps its existing width (read from the current SVG). Regenerated SVGs show up as modified files in 50ohm-contents-dl – commit them with the matching .tex.

Git layout

This folder is the 50ohm-deploy repo; the three repos are submodules tracking branch sv:

50ohm-deploy  (docker-compose.yml, docker/, Makefile, scripts/)
├── 50ohm/                generator
├── 50ohm-contents-dl/    content
└── 50ohm-ansible/        server playbook

Fresh machine:

$ git clone https://git.nyaaa.net/Superminaren/50ohm-deploy.git && cd 50ohm-deploy
$ scripts/fetch.sh        # init submodules, check out sv, add the DARC "upstream" remotes, create .env
$ make build && make up

scripts/fetch.sh --pinned checks out exactly the commits recorded in this repo instead of the tip of sv.

Pushing everything: make push (or scripts/push.sh) pushes the three submodules on sv first and then this repo on main; it refuses to run while anything is uncommitted. make push DRY=1 is a dry run.

By hand. A submodule records a commit hash, so commit and push inside the submodule first, then record the new hash in the parent. push.recurseSubmodules=on-demand is set, so from the parent:

$ git -C 50ohm-contents-dl commit -am "..."        # work happens in the submodule
$ git add 50ohm-contents-dl && git commit -m "Update content"
$ git push                                         # pushes the submodule commits first, then this repo

upstream (the original DARC repos, local-only) lets you pull their changes: git -C 50ohm fetch upstream. make remotes lists all remotes. Nothing from the Docker setup lands in the submodules except regenerated drawings/*.svg; build leftovers are in each repo's .gitignore.

Deploying to a server

See 50ohm-ansible/README.md. vars.yml is filled in for 50ohm.se: point the DNS at the server, list the admins in users.yml, then run site.yml.