Infrastructure pass: CI smoke tests, floating versions, chown sentinel, generate-config script

Main changes:

- Extract opencode.json generation from entrypoint-user.sh into a
  standalone Python script (rootfs/usr/local/lib/opencode-devbox/
  generate-config.py). Preserves the never-overwrite-existing-config
  guarantee. Cuts entrypoint-user.sh from 176 to 97 lines.

- Install MemPalace via 'uv tool install' into an isolated venv at
  /opt/uv-tools/mempalace/ with a /usr/local/bin/mempalace-mcp-server
  wrapper, replacing the 'pip install --break-system-packages' escape
  hatch. The wrapper is what generate-config.py references in the
  auto-generated opencode.json. Also fix 'mempalace init' in
  entrypoint-user.sh to use --yes so first-start initialization isn't
  interactive (this used to hang or print prompts into the user's
  terminal). Gated by INSTALL_MEMPALACE build arg (default true) so
  users who don't need AI memory can shave ~300 MB.

- Sentinel-file pattern in entrypoint.sh volume-ownership loop: write
  .devbox-owner after a successful chown -R, skip the recursive walk
  on subsequent starts when the sentinel matches FINAL_UID:FINAL_GID.
  Cuts multi-second startup costs to milliseconds on large volumes
  (nvim plugins, palace data). UID changes still trigger a full chown.

- Float all GitHub/Gitea-hosted binary versions: gosu, fzf, git-lfs,
  neovim, bat, eza, zoxide, uv, gitea-mcp now default to 'latest' and
  resolve the newest upstream release at build time via the /releases/
  latest redirect. Go (go.dev JSON feed) and oh-my-opencode-slim (npm
  @latest) likewise. Intentional pins still in place: OPENCODE_VERSION,
  NODE_VERSION=22, DEBIAN_VERSION=trixie-slim. Each *_VERSION ARG
  accepts an explicit value to lock a specific version when needed.

- New scripts/smoke-test.sh verifies binary presence, opencode startup,
  entrypoint user drop, generate-config idempotency, bun's presence-
  per-variant, and image size against thresholds (2500 MB base, 3000
  MB OMOS). Prints resolved component versions as its first step so
  CI logs always record what got baked into a given image.

- New .gitea/workflows/validate.yml runs on push to main and PRs:
  single-arch amd64 build, smoke test, DOCKER_HUB.md sync check. Tag-
  triggered docker-publish.yml now smoke-tests each variant on amd64
  before the full multi-arch push.

- scripts/generate-dockerhub-md.py auto-generates DOCKER_HUB.md from
  README.md using explicit SECTION_RULES. --check mode fails CI when
  the committed file is out of sync. Enforces the 25 kB Docker Hub
  limit. Adding a new README section forces an explicit keep/drop/
  replace decision.

- Remove dead INSTALL_PYTHON build arg (was a no-op since mempalace
  added python3 unconditionally).
This commit is contained in:
2026-04-28 23:28:43 +02:00
parent 4efc4e8005
commit 113c9f0bb0
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#!/usr/bin/env python3
"""
Generate DOCKER_HUB.md from README.md.
Rationale
---------
README.md is the authoritative source. DOCKER_HUB.md is a subset
intended for users pulling the pre-built image from Docker Hub — so
build-from-source instructions, developer setup (git hooks, gitleaks),
and CI/contribution content are dropped.
Docker Hub enforces a 25 kB limit on the full description field.
Usage
-----
Regenerate in place:
python3 scripts/generate-dockerhub-md.py
Fail if DOCKER_HUB.md is out of sync with what this script would emit
(run this in CI):
python3 scripts/generate-dockerhub-md.py --check
Design
------
Sections are selected and in some cases rewritten via `SECTION_RULES`
below. This keeps the transformation explicit and easy to audit — if
a new section is added to README.md that should also appear on Docker
Hub, extend SECTION_RULES rather than inventing implicit heuristics.
"""
from __future__ import annotations
import argparse
import re
import sys
from pathlib import Path
REPO_ROOT = Path(__file__).resolve().parent.parent
README = REPO_ROOT / "README.md"
DOCKER_HUB = REPO_ROOT / "DOCKER_HUB.md"
# Max size for Docker Hub full_description (bytes, UTF-8).
MAX_SIZE_BYTES = 25_000
# Per-section transformation.
#
# Each key is a top-level section title as it appears in README.md
# (without the leading "## ").
#
# The value is one of:
# "keep" — include verbatim.
# "drop" — exclude entirely.
# "replace" — substitute a custom body (see REPLACEMENTS).
# "trim" — keep but drop selected level-3 sub-sections listed
# in TRIM_SUBSECTIONS[title].
#
# Unknown sections default to "drop" with a warning — forcing an
# explicit decision whenever README gains a new section.
SECTION_RULES: dict[str, str] = {
"Why?": "drop", # build-motivation, not user-facing
"Quick Start": "replace", # swap docker compose clone flow for docker run
"Features": "keep",
"Usage": "keep",
"Configuration": "trim", # drop dev-build sub-sections
"oh-my-opencode-slim (Multi-Agent Orchestration)": "keep",
"AWS Bedrock Authentication": "keep",
"MemPalace — persistent AI memory": "keep",
"Gitea MCP server": "keep",
"Shell defaults": "keep",
"Secret Scanning": "drop", # dev-only — gitleaks is for committers
"Architecture": "keep",
"License": "replace", # point at source repo instead
}
# Level-3 sub-section titles (without the leading "### ") to drop from
# sections flagged as "trim". These are dev/build-oriented — Docker Hub
# users already have the image and don't need rebuild or multi-user
# compose instructions.
TRIM_SUBSECTIONS: dict[str, set[str]] = {
"Configuration": {
"Multi-user setup",
"Rebuilding the Image",
"Build Args",
},
}
# Replacement bodies. Keys match SECTION_RULES entries marked "replace".
# Each value is the full section including the "## Title" heading.
REPLACEMENTS: dict[str, str] = {
"Quick Start": """## Quick Start
```bash
docker run -it --rm \\
-e ANTHROPIC_API_KEY=your-key \\
-e OPENCODE_PROVIDER=anthropic \\
-e GIT_USER_NAME="Your Name" \\
-e GIT_USER_EMAIL="you@example.com" \\
-v ~/projects:/workspace \\
-v ~/.ssh:/home/developer/.ssh:ro \\
joakimp/opencode-devbox:latest
```
This drops you straight into opencode with your project mounted at `/workspace`.
For an interactive shell first (useful for AWS SSO login):
```bash
docker run -it --rm \\
-e ANTHROPIC_API_KEY=your-key \\
-e OPENCODE_PROVIDER=anthropic \\
-v ~/projects:/workspace \\
-v ~/.ssh:/home/developer/.ssh:ro \\
joakimp/opencode-devbox:latest bash
```
Then run `opencode` when ready.
For docker-compose users, see the source repo for `docker-compose.yml` and `.env.example` templates.
""",
"License": """## Source
MIT licensed. Source, issues, and `docker-compose.yml` templates: <https://gitea.jordbo.se/joakimp/opencode-devbox>
""",
}
# Prepended to the generated file.
HEADER = """# opencode-devbox — Docker Hub
Portable AI developer environment for [opencode](https://opencode.ai). Debian-based, with git, SSH, Node.js, AWS CLI v2, and common dev tools pre-installed.
## Image Variants
Two image variants are published for each release:
| Tag | Description |
|---|---|
| `latest` / `vX.Y.Z` | Base image — opencode, Node.js, AWS CLI, dev tools |
| `latest-omos` / `vX.Y.Z-omos` | Base + [oh-my-opencode-slim](https://github.com/alvinunreal/oh-my-opencode-slim) multi-agent orchestration and Bun |
Both variants support `linux/amd64` and `linux/arm64`.
> **NOTE:** This file is auto-generated from `README.md` by `scripts/generate-dockerhub-md.py`. Edit README.md and regenerate rather than editing this file directly.
"""
def split_sections(md: str) -> list[tuple[str, str]]:
"""Split markdown on level-2 headings, returning (title, body) pairs.
The body includes the heading line and everything up to (but not
including) the next level-2 heading or EOF. Content before the first
``## `` is returned with an empty title (the document preamble).
"""
pattern = re.compile(r"^## ", re.MULTILINE)
parts = pattern.split(md)
preamble, *rest = parts
sections: list[tuple[str, str]] = []
if preamble.strip():
sections.append(("", preamble))
for part in rest:
line, _, body = part.partition("\n")
sections.append((line.strip(), f"## {line}\n{body}"))
return sections
def trim_subsections(body: str, drop: set[str]) -> str:
"""Remove level-3 sub-sections whose title is in `drop`.
A sub-section starts at a line beginning with "### " and ends at
the next "### " or "## " (or EOF).
"""
if not drop:
return body
# Split on level-3 headings while preserving the level-2 header
# block. First piece is everything up to the first "### ".
parts = re.split(r"(^### .+\n)", body, flags=re.MULTILINE)
# parts alternates: [before_first_h3, "### Title\n", body, "### Title\n", body, ...]
kept: list[str] = [parts[0]] if parts else []
i = 1
while i < len(parts):
heading = parts[i]
content = parts[i + 1] if i + 1 < len(parts) else ""
title = heading[4:].strip()
if title not in drop:
kept.append(heading)
kept.append(content)
i += 2
return "".join(kept)
def generate() -> str:
"""Produce the DOCKER_HUB.md content string."""
readme = README.read_text(encoding="utf-8")
sections = split_sections(readme)
out: list[str] = [HEADER]
unknown: list[str] = []
for title, body in sections:
if title == "":
# README preamble is replaced by our HEADER; skip.
continue
rule = SECTION_RULES.get(title)
if rule is None:
unknown.append(title)
continue
if rule == "drop":
continue
if rule == "keep":
out.append(body.rstrip() + "\n\n")
elif rule == "trim":
trimmed = trim_subsections(body, TRIM_SUBSECTIONS.get(title, set()))
out.append(trimmed.rstrip() + "\n\n")
elif rule == "replace":
out.append(REPLACEMENTS[title].rstrip() + "\n\n")
else: # pragma: no cover — programmer error
raise AssertionError(f"unknown rule {rule!r} for section {title!r}")
if unknown:
print(
"ERROR: README.md contains sections not classified in "
"SECTION_RULES:\n - "
+ "\n - ".join(unknown)
+ "\n\nAdd each to SECTION_RULES in "
"scripts/generate-dockerhub-md.py (choose keep/drop/replace).",
file=sys.stderr,
)
raise SystemExit(2)
return "".join(out).rstrip() + "\n"
def main() -> int:
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument(
"--check",
action="store_true",
help="Fail if DOCKER_HUB.md differs from generated content.",
)
args = parser.parse_args()
content = generate()
size = len(content.encode("utf-8"))
if size > MAX_SIZE_BYTES:
print(
f"ERROR: generated DOCKER_HUB.md is {size} bytes, exceeding the "
f"Docker Hub limit of {MAX_SIZE_BYTES} bytes.",
file=sys.stderr,
)
return 1
if args.check:
existing = DOCKER_HUB.read_text(encoding="utf-8") if DOCKER_HUB.exists() else ""
if existing != content:
print(
"ERROR: DOCKER_HUB.md is out of sync with README.md.\n"
"Run: python3 scripts/generate-dockerhub-md.py",
file=sys.stderr,
)
# Show a small diff hint.
import difflib
diff = difflib.unified_diff(
existing.splitlines(keepends=True),
content.splitlines(keepends=True),
fromfile="DOCKER_HUB.md (committed)",
tofile="DOCKER_HUB.md (generated)",
n=2,
)
sys.stderr.writelines(list(diff)[:80])
return 1
print(
f"OK: DOCKER_HUB.md is in sync with README.md "
f"({size} bytes, {MAX_SIZE_BYTES} limit).",
)
return 0
DOCKER_HUB.write_text(content, encoding="utf-8")
print(
f"Wrote {DOCKER_HUB} ({size} bytes, {MAX_SIZE_BYTES} limit).",
)
return 0
if __name__ == "__main__":
raise SystemExit(main())