docker-images

A single repo for all my container images (Forgejo CI runners, test-stack helpers, etc.) and a build script (build.sh) that can build & push any subset of them.

Repository Layout

.
├── build.sh # one-stop build & push tool
├── forgejo/
│ ├── ubuntu/
│ │ ├── 22.04/ -> ubuntu-2204
│ │ └── 24.04/ -> ubuntu-2404
│ └── alpine/
│   └── 3.19/ -> alpine-319
└── tests/

Add a new image by adding another folder that contains a Dockerfile.

Tag-naming rule

1. Drop the top-level folder (forgejo or tests).
2. Replace every remaining “/” with “-”.
3. Strip dots from the version segment.

Path example	Resulting tag
forgejo/ubuntu/24.04	ubuntu-2404
tests/postgres/16	postgres-16
forgejo/alpine/3.19	alpine-319

The final image name is <REGISTRY>:<tag> — the registry is configured at the top of build.sh.

---

Quick start

# 0) One-time login (uses registry host part)
docker login git.berger-em.net

# 1) Build & push every Dockerfile in the repo
./build.sh

Build specific images only

# single folder
./build.sh forgejo/ubuntu/24.04

# multiple
./build.sh tests/postgres/16 forgejo/alpine/3.19

You can also point directly at an individual Dockerfile.