Run Paseo from an official Docker image (#1740)

* Add Docker images and agent Docker Mods

Ship official container images that run the Paseo daemon headless. One
Dockerfile parametrized by BASE_IMAGE covers Debian 12/13, Ubuntu 22.04/24.04
and Alpine; it bundles Node 22, the npm-published server + CLI, a vendored
s6-overlay as PID 1, and a small Docker Mods loader.

Agents are chosen at runtime via DOCKER_MODS (pipe-separated mod images). Each
mod is a FROM scratch image carrying only an install hook that runs
`npm install -g <agent-cli>`; the loader pulls the layers from the registry,
extracts them, and runs the hook before the daemon starts, so any requested
agent is on PATH when Paseo probes provider availability.

- docker/base: Dockerfile, install scripts, s6 services, mods loader
- docker/mods/*: claude-code, codex, copilot, opencode, pi
- docker/docker-compose.example.yml + docker/README.md
- .github/workflows/docker.yml: multi-arch (amd64/arm64) buildx matrix,
  publishes to ghcr.io/getpaseo on version tags
- docs/docker.md + CLAUDE.md docs index row

* feat(docker): print pairing QR and link on daemon startup

Add an s6 oneshot service that waits for the daemon to listen, then runs
`paseo daemon pair` so the pairing QR code and link surface in the container
logs. Best-effort: never blocks boot, skips gracefully when relay is disabled.
Opt out with PASEO_PAIRING_QR=0.

* build(docker): add Arch image support

* ci(docker): build Arch without Buildx

* docs(docker): document paseo env contract

* feat(docker): add opt-in sudo mode

* docs(docker): link env references

* fix(docker): create agent config dirs

* fix(docker): default home to /home/paseo

* docs(docker): document agent auth setup

* docs(docker): document relay port setup

* fix(docker): install Node from tarball

* docs: add Docker quick start

* docs(docker): remove legacy home example

* docs(docker): set container hostname

* fix(docker): prepare opencode storage

* fix(docker): allow paseo login shell

* fix docker opencode permissions

* ci(docker): use Node 24 actions

* fix(docker): install bzip2 runtime tools

* fix(docker): update Pi mod package

* fix(docker): quiet default daemon logs

* fix(docker): split home from state

Docker images now keep HOME at /home/paseo and store Paseo daemon state under /home/paseo/.paseo by default.

Existing volumes can keep the old layout by setting PASEO_HOME=/home/paseo.

* fix(docker): keep mods out of paseo home

* ci(docker): skip alpine arm64 builds

* fix(docker): address review findings

* fix(docker): verify s6 overlay downloads

* fix(docker): honor custom healthcheck port

* fix(docker): fail on mod extraction errors

* feat(docker): add official container image

Ship a focused daemon image with the bundled web UI enabled and document extending it with agent CLIs.

* ci(docker): publish images only on stable releases

* fix(docker): check daemon health over HTTP

---------

Co-authored-by: Herbrant <cdavide98carnemolla@gmail.com>

docker/base/rootfs/usr/local/bin/paseo-docker-entrypoint

@@ -0,0 +1,78 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+IMAGE_HOME="/home/paseo"
+
+: "${HOME:=$IMAGE_HOME}"
+: "${PASEO_HOME:=${HOME}/.paseo}"
+: "${PASEO_LISTEN:=0.0.0.0:6767}"
+: "${PASEO_WEB_UI_ENABLED:=true}"
+: "${PASEO_LOG_LEVEL:=info}"
+: "${PASEO_LOG_FORMAT:=json}"
+: "${CLAUDE_CONFIG_DIR:=${HOME}/.claude}"
+: "${CODEX_HOME:=${HOME}/.codex}"
+: "${XDG_CONFIG_HOME:=${HOME}/.config}"
+: "${XDG_DATA_HOME:=${HOME}/.local/share}"
+: "${XDG_STATE_HOME:=${HOME}/.local/state}"
+: "${XDG_CACHE_HOME:=${HOME}/.cache}"
+
+export HOME
+export PASEO_HOME
+export PASEO_LISTEN
+export PASEO_WEB_UI_ENABLED
+export PASEO_LOG_LEVEL
+export PASEO_LOG_FORMAT
+export CLAUDE_CONFIG_DIR
+export CODEX_HOME
+export XDG_CONFIG_HOME
+export XDG_DATA_HOME
+export XDG_STATE_HOME
+export XDG_CACHE_HOME
+
+ensure_dir() {
+  local dir="$1"
+  mkdir -p "$dir"
+  if [[ "$(id -u)" == "0" ]]; then
+    local owner
+    owner="$(stat -c "%u" "$dir")"
+    if [[ "$owner" == "0" ]]; then
+      chown paseo:paseo "$dir"
+    fi
+  fi
+}
+
+ensure_dir "$HOME"
+ensure_dir "$PASEO_HOME"
+ensure_dir "$CLAUDE_CONFIG_DIR"
+ensure_dir "$CODEX_HOME"
+ensure_dir "$XDG_CONFIG_HOME"
+ensure_dir "$XDG_DATA_HOME"
+ensure_dir "$XDG_STATE_HOME"
+ensure_dir "$XDG_CACHE_HOME"
+
+if [[ "$#" -gt 0 ]]; then
+  if [[ "$(id -u)" == "0" ]]; then
+    exec gosu paseo "$@"
+  fi
+  exec "$@"
+fi
+
+if [[ -z "${PASEO_PASSWORD:-}" ]]; then
+  {
+    echo "[paseo] WARNING: PASEO_PASSWORD is not set."
+    echo "[paseo] The daemon accepts unauthenticated control connections from any client that can reach it."
+    echo "[paseo] Set PASEO_PASSWORD for any published port or network-reachable deployment."
+  } >&2
+fi
+
+if [[ ! -f /etc/paseo-server-entry ]]; then
+  echo "[paseo] FATAL: /etc/paseo-server-entry is missing." >&2
+  exit 1
+fi
+
+entry="$(cat /etc/paseo-server-entry)"
+echo "[paseo] starting daemon on ${PASEO_LISTEN} with web UI ${PASEO_WEB_UI_ENABLED}"
+if [[ "$(id -u)" == "0" ]]; then
+  exec gosu paseo node "$entry"
+fi
+exec node "$entry"