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66 lines
2.3 KiB
Markdown
66 lines
2.3 KiB
Markdown
# AGENTS.md
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## Project overview
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This repository builds and publishes a Docker image for [OpenCode](https://opencode.ai), the open source AI coding agent. The image runs OpenCode in headless server mode (`opencode serve`) and is automatically rebuilt and pushed to Docker Hub (`jcabillot/opencode`) every night by a Jenkins pipeline.
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## Repository structure
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```
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.
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├── Dockerfile # Image definition
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├── Jenkinsfile # CI/CD pipeline (nightly build + Docker Hub push)
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└── README.md # Usage documentation
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```
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## Dockerfile conventions
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- **Base image**: `node:24-alpine` — use the latest Node.js LTS Alpine image.
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- **Install**: `npm i -g opencode-ai` — installs OpenCode globally.
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- **Version check**: `RUN opencode --version` after install to validate the build and record the installed version in build logs.
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- **Dedicated user**: a non-root `opencode` user and group are created with `addgroup`/`adduser`. All runtime steps run as this user.
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- **Entrypoint**: `["opencode", "serve"]` — the container always starts the HTTP server.
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## Jenkinsfile conventions
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- The pipeline runs on a `@midnight` cron trigger for nightly rebuilds.
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- Build uses `--no-cache --pull` to always fetch the latest base image and package version.
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- Docker Hub credentials are stored under the `dockerhub_jcabillot` Jenkins credential ID.
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- The image is published as `jcabillot/opencode` (no explicit tag = `latest`).
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## Useful commands
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```bash
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# Build the image locally
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docker build -t opencode .
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# Run the server on all interfaces
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docker run -it -p 4096:4096 opencode --hostname 0.0.0.0
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# Run with a project mounted
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docker run -it -p 4096:4096 \
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-v $(pwd):/home/opencode/project \
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opencode --hostname 0.0.0.0
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# Protect with a password
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docker run -it -p 4096:4096 \
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-e OPENCODE_SERVER_PASSWORD=secret \
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opencode --hostname 0.0.0.0
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```
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## opencode serve options
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| Flag | Default | Description |
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|------|---------|-------------|
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| `--port` | `4096` | Port to listen on |
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| `--hostname` | `127.0.0.1` | Hostname to bind |
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| `--mdns` | `false` | Enable mDNS discovery |
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| `--cors` | `[]` | Additional allowed browser origins |
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## Environment variables
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| Variable | Description |
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|----------|-------------|
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| `OPENCODE_SERVER_PASSWORD` | Enables HTTP basic auth |
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| `OPENCODE_SERVER_USERNAME` | Overrides the default username (`opencode`) |
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