feat: migrate to OpenCode 2

OpenCode 2 publishes its CLI as @opencode/cli (opencode-ai stops at
1.19.x), so install that package and pin it to 2.0.32.

Also fix what the v2 migration invalidates:
- renovate.json: track @opencode/cli instead of opencode-ai, otherwise
  the pin is never bumped.
- opencode-attach: `opencode attach` no longer exists in v2. Point the
  client at the server with `--server <url>` instead (appended after a
  subcommand when one is given); auth still comes from
  OPENCODE_SERVER_PASSWORD / OPENCODE_PASSWORD.
- README/AGENTS: v2 package name, entrypoint, serve defaults, API
  surface (/global/health is gone, everything lives under authenticated
  /api/*), and removal of OPENCODE_SERVER_USERNAME (the username is
  always `opencode` in v2).

The entrypoint stays ["opencode"] on purpose: existing deployments pass
`serve ...` at runtime, and OpenCode 2 is invoked the same way.

AGENTS.md

@@ -2,7 +2,7 @@
 
 ## Project overview
 
-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 Gitea Actions pipeline.
+This repository builds and publishes a Docker image for [OpenCode](https://opencode.ai), the open source AI coding agent. The image ships OpenCode 2, runs it in headless server mode (`opencode serve`), and is automatically rebuilt and pushed to Docker Hub (`jcabillot/opencode`) every night by a Gitea Actions pipeline.
 
 ## Repository structure
 
@@ -17,18 +17,25 @@ This repository builds and publishes a Docker image for [OpenCode](https://openc
 
 ## Dependency management
 
-- **Always pin versions** in the Dockerfile `npm install` command (e.g. `opencode-ai@1.16.2 n2-soul@9.0.9`). Never leave packages unpinned.
+- **Always pin versions** in the Dockerfile `npm install` command (e.g. `@opencode/cli@2.0.32 n2-soul@9.0.9`). Never leave packages unpinned.
 - **Update renovate customManagers** when adding, removing, or renaming a dependency tracked in the Dockerfile. Each pinned package must have a corresponding `customManager` entry in `renovate.json` with a regex `matchStrings` pattern that captures the version. If a dependency is added without a renovate entry, Renovatebot will not open automated PRs for it.
 - **apt packages** (apt-get install lines in Dockerfile) and **COPY --from** image references are not currently tracked by Renovate. Pinning these manually is acceptable for now but adding renovate managers for them is encouraged.
 
 ## Dockerfile conventions
 
-- **Base image**: `node:24` — Debian-based Node.js image (not Alpine, needed for apt packages).
+- **Base image**: `node:26-trixie` — Debian-based Node.js image (not Alpine) so that downstream images can still use `apt-get` and Node-based MCP servers keep working.
-- **Install**: `npm i -g opencode-ai@<version> n2-soul@<version>` — installs OpenCode and Soul globally, both pinned.
+- **Install**: `npm i -g @opencode/cli@<version> n2-soul@<version>` — installs OpenCode 2 and Soul globally, both pinned. `@opencode/cli` replaced `opencode-ai` as the published package in OpenCode 2; `--allow-scripts=@opencode/cli` is required for its `postinstall` to select the native binary.
 - **Version check**: `RUN opencode --version` after install to validate the build and record the installed version in build logs.
 - **Dedicated user**: a non-root `opencode` user and group are created with `groupadd`/`useradd` (UID/GID 1000). All runtime steps run as this user.
 - **Cluster tooling**: `kubectl` is copied from the official `registry.k8s.io/kubectl` image (multi-stage COPY).
-- **Entrypoint**: `["opencode"]` — arguments are passed at runtime (e.g. `serve`).
+- **Entrypoint**: `["opencode"]` — arguments are passed at runtime; `serve` starts the headless server. Bare `opencode` opens the TUI, so the server is always invoked explicitly.
+
+## OpenCode 2 notes
+
+- The npm package is `@opencode/cli` (bins `opencode` and `opencode2`); `opencode-ai` stops at 1.19.x and must not come back.
+- `opencode attach` no longer exists: point a client at a server with `opencode --server <url>` (after the subcommand when one is given). `opencode-attach` wraps this.
+- The server always authenticates: username is fixed to `opencode`, password comes from `OPENCODE_SERVER_PASSWORD` or `OPENCODE_PASSWORD`, and a random one is generated and logged when neither is set.
+- The v1 REST API was replaced (`/global/health` is gone, every route now lives under `/api/*` and requires auth). Any client calling the v1 API — e.g. `perso/opencode-dispatch` — must be migrated separately.
 
 ## CI/CD conventions (Gitea Actions)
 
@@ -44,17 +51,17 @@ This repository builds and publishes a Docker image for [OpenCode](https://openc
 docker build -t opencode .
 
 # Run the server on all interfaces
-docker run -it -p 4096:4096 opencode --hostname 0.0.0.0
+docker run -it -p 4096:4096 opencode serve --hostname 0.0.0.0
 
 # Run with a project mounted
 docker run -it -p 4096:4096 \
   -v $(pwd):/home/opencode/project \
-  opencode --hostname 0.0.0.0
+  opencode serve --hostname 0.0.0.0
 
 # Protect with a password
 docker run -it -p 4096:4096 \
   -e OPENCODE_SERVER_PASSWORD=secret \
-  opencode --hostname 0.0.0.0
+  opencode serve --hostname 0.0.0.0
 ```
 
 ## opencode serve options
@@ -63,12 +70,15 @@ docker run -it -p 4096:4096 \
 |------|---------|-------------|
 | `--port` | `4096` | Port to listen on |
 | `--hostname` | `127.0.0.1` | Hostname to bind |
-| `--mdns` | `false` | Enable mDNS discovery |
+| `--cors` | `[]` | Additional allowed browser origins (repeatable) |
-| `--cors` | `[]` | Additional allowed browser origins |
+| `--service` | `false` | Run as the shared background service |
+| `--stdio` | `false` | Serve over stdio for editor integrations |
 
 ## Environment variables
 
 | Variable | Description |
 |----------|-------------|
-| `OPENCODE_SERVER_PASSWORD` | Enables HTTP basic auth |
+| `OPENCODE_SERVER_PASSWORD` | Server password (HTTP basic auth, username `opencode`) |
-| `OPENCODE_SERVER_USERNAME` | Overrides the default username (`opencode`) |
+| `OPENCODE_PASSWORD` | Same, takes precedence over `OPENCODE_SERVER_PASSWORD` |
+
+`OPENCODE_SERVER_USERNAME` existed in OpenCode 1 and is no longer read: the username is always `opencode`.

Dockerfile

@@ -16,7 +16,7 @@ RUN apt-get update && \
     npm install -g --no-fund --no-audit --ignore-scripts n2-soul@9.0.9 && \
     npm install -g --no-fund --no-audit --allow-scripts=better-sqlite3 better-sqlite3@12.11.1 && \
     rm -rf /usr/local/lib/node_modules/n2-soul/node_modules/better-sqlite3 && \
-    npm install -g --no-fund --no-audit --allow-scripts=opencode-ai opencode-ai@1.19.0 && \
+    npm install -g --no-fund --no-audit --allow-scripts=@opencode/cli @opencode/cli@2.0.32 && \
     npm cache clean --force && \
     chown -R 1000:1000 /usr/local/lib/node_modules/n2-soul/
 

README.md

@@ -4,7 +4,7 @@ Docker image for running [OpenCode](https://opencode.ai) as a headless HTTP serv
 
 ## What is OpenCode?
 
-OpenCode is an open source AI coding agent available as a terminal interface, desktop app, or IDE extension. This image runs it in server mode (`opencode serve`), exposing an HTTP API that clients can connect to.
+OpenCode is an open source AI coding agent available as a terminal interface, desktop app, or IDE extension. This image ships OpenCode 2 and runs it in server mode (`opencode serve`), exposing an HTTP API and web UI that clients can connect to.
 
 ## Pull
 
@@ -12,7 +12,7 @@ OpenCode is an open source AI coding agent available as a terminal interface, de
 docker pull jcabillot/opencode
 ```
 
-The image is rebuilt and pushed to Docker Hub automatically every night via the Jenkins pipeline.
+The image is rebuilt and pushed to Docker Hub automatically every night by the Gitea Actions pipeline.
 
 ## Build locally
 
@@ -22,14 +22,16 @@ docker build -t opencode .
 
 ## Run
 
+The entrypoint is the `opencode` binary; pass `serve` to start the headless server:
+
 ```bash
-docker run -it -p 4096:4096 jcabillot/opencode
+docker run -it -p 4096:4096 jcabillot/opencode serve
 ```
 
-By default the server listens on `127.0.0.1:4096`. To expose it on all interfaces:
+The server listens on `127.0.0.1:4096` by default. To expose it on all interfaces:
 
 ```bash
-docker run -it -p 4096:4096 jcabillot/opencode --hostname 0.0.0.0
+docker run -it -p 4096:4096 jcabillot/opencode serve --hostname 0.0.0.0
 ```
 
 ### Mount a project
@@ -37,7 +39,7 @@ docker run -it -p 4096:4096 jcabillot/opencode --hostname 0.0.0.0
 ```bash
 docker run -it -p 4096:4096 \
   -v $(pwd):/home/opencode/project \
-  jcabillot/opencode --hostname 0.0.0.0
+  jcabillot/opencode serve --hostname 0.0.0.0
 ```
 
 ### Secure with a password
@@ -45,17 +47,17 @@ docker run -it -p 4096:4096 \
 ```bash
 docker run -it -p 4096:4096 \
   -e OPENCODE_SERVER_PASSWORD=your-password \
-  jcabillot/opencode --hostname 0.0.0.0
+  jcabillot/opencode serve --hostname 0.0.0.0
 ```
 
-Authentication uses HTTP basic auth. The default username is `opencode`, override it with `OPENCODE_SERVER_USERNAME`.
+Authentication uses HTTP basic auth. The username is always `opencode`; the password is read from `OPENCODE_SERVER_PASSWORD` (or `OPENCODE_PASSWORD`). When neither is set, OpenCode 2 generates a random password and prints it to the log at startup — the server is never left unauthenticated.
 
 ## Troubleshooting helper
 
 The image includes an `opencode-attach` wrapper in `PATH` that runs:
 
 ```bash
-opencode attach -p "${OPENCODE_SERVER_PASSWORD}" "${OPENCODE_API_URL}"
+opencode --server "${OPENCODE_API_URL}"
 ```
 
 Example:
@@ -66,31 +68,39 @@ export OPENCODE_API_URL=http://127.0.0.1:4096
 opencode-attach
 ```
 
+Extra arguments are forwarded to the client, with `--server` appended to the subcommand:
+
+```bash
+opencode-attach session list --format json
+```
+
 ## API
 
 Once running, the server exposes an OpenAPI 3.1 spec at:
 
 ```
-http://localhost:4096/doc
+http://localhost:4096/openapi.json
 ```
 
+The web UI is served at `/` and is reachable without credentials; every `/api/*` route requires basic auth.
+
 Key endpoints:
 
 | Method | Path | Description |
 |--------|------|-------------|
-| `GET` | `/global/health` | Health check and version |
+| `GET` | `/api/info` | Health check and version |
-| `GET` | `/session` | List sessions |
+| `GET` | `/api/session` | List sessions |
-| `POST` | `/session` | Create a session |
+| `POST` | `/api/session` | Create a session |
-| `POST` | `/session/:id/message` | Send a message |
+| `POST` | `/api/session/:id/prompt` | Send a message |
-| `GET` | `/event` | Server-sent events stream |
+| `GET` | `/api/event` | Server-sent events stream |
 
-See the [OpenCode server docs](https://opencode.ai/docs/server/) for the full API reference.
+See the [OpenCode v2 API reference](https://opencode.ai/v2/docs/api/) for the full API surface.
 
 ## Image details
 
-- **Base image**: `node:24` (Debian)
+- **Base image**: `node:26-trixie` (Debian)
-- **Install**: `opencode-ai` via npm global install
+- **Install**: `@opencode/cli` (OpenCode 2) via npm global install
 - **User**: dedicated non-root `opencode` user
 - **Cluster tooling**: `kubectl` (copied from official registry image)
-- **Entrypoint**: `opencode serve`
+- **Entrypoint**: `opencode`
 - **Default port**: `4096`

opencode-attach

@@ -45,4 +45,12 @@ trap cleanup_lock INT TERM EXIT
 kill_existing_instance
 printf '%s\n' "$$" > "$LOCKFILE"
 
-exec opencode attach -p "${OPENCODE_SERVER_PASSWORD}" "${OPENCODE_API_URL}" "$@"
+# OpenCode 2 dropped `opencode attach`: a client is pointed at a server with
+# --server <url>, which must follow the subcommand when one is given.
+if [ "$#" -eq 0 ]; then
+    set -- --server "${OPENCODE_API_URL}"
+else
+    set -- "$@" --server "${OPENCODE_API_URL}"
+fi
+
+exec opencode "$@"

renovate.json

@@ -12,10 +12,10 @@
     },
     {
       "customType": "regex",
-      "description": "Track opencode-ai npm package pinned in Dockerfile RUN command",
+      "description": "Track @opencode/cli npm package pinned in Dockerfile RUN command",
       "managerFilePatterns": ["/^Dockerfile$/"],
-      "matchStrings": ["opencode-ai@(?<currentValue>[^\\s]+)"],
+      "matchStrings": ["@opencode/cli@(?<currentValue>[^\\s]+)"],
-      "depNameTemplate": "opencode-ai",
+      "depNameTemplate": "@opencode/cli",
       "datasourceTemplate": "npm",
       "versioningTemplate": "npm"
     }