feat(docker): add Compose deployment support

docker/Start-Codeman.sh

@@ -0,0 +1,73 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+script_dir=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)
+env_file="$script_dir/.env"
+compose_file="$script_dir/docker-compose.yaml"
+
+if [[ ! -f "$env_file" ]]; then
+  printf 'Error: Docker environment file is missing: %s\n' "$env_file" >&2
+  printf 'Create it from %s/.env.example before starting Codeman.\n' "$script_dir" >&2
+  exit 1
+fi
+
+compose_command=(docker compose --env-file "$env_file" -f "$compose_file")
+appdata_path=$(
+  "${compose_command[@]}" config --environment |
+    awk -F= '$1 == "CODEMAN_APPDATA_PATH" { sub(/^[^=]*=/, ""); print; exit }'
+)
+docker_socket=$(
+  "${compose_command[@]}" config --environment |
+    awk -F= '$1 == "DOCKER_SOCKET" { sub(/^[^=]*=/, ""); print; exit }'
+)
+
+if [[ -z "$appdata_path" ]]; then
+  printf 'Error: CODEMAN_APPDATA_PATH is not set in %s\n' "$env_file" >&2
+  exit 1
+fi
+
+if [[ ! -d "$appdata_path" ]]; then
+  if [[ "$EUID" == '0' ]]; then
+    printf 'Error: Refusing to create CODEMAN_APPDATA_PATH as root: %s\n' "$appdata_path" >&2
+    printf 'Create it as the unprivileged account that should run Codeman, then retry.\n' >&2
+    exit 1
+  fi
+  mkdir -p -- "$appdata_path"
+fi
+
+if owner_ids=$(stat -c '%u:%g' -- "$appdata_path" 2>/dev/null); then
+  :
+elif owner_ids=$(stat -f '%u:%g' "$appdata_path" 2>/dev/null); then
+  :
+else
+  printf 'Error: Cannot determine the owner of CODEMAN_APPDATA_PATH: %s\n' "$appdata_path" >&2
+  exit 1
+fi
+
+export PUID=${owner_ids%%:*}
+export PGID=${owner_ids##*:}
+
+if [[ "$PUID" == '0' ]]; then
+  printf 'Error: CODEMAN_APPDATA_PATH is owned by root: %s\n' "$appdata_path" >&2
+  printf 'Change the directory ownership to the unprivileged account that should run Codeman.\n' >&2
+  exit 1
+fi
+
+if [[ -z "$docker_socket" || ! -S "$docker_socket" ]]; then
+  printf 'Error: DOCKER_SOCKET is not a Unix socket: %s\n' "${docker_socket:-<unset>}" >&2
+  exit 1
+fi
+
+if socket_ids=$(stat -c '%u:%g' -- "$docker_socket" 2>/dev/null); then
+  :
+elif socket_ids=$(stat -f '%u:%g' "$docker_socket" 2>/dev/null); then
+  :
+else
+  printf 'Error: Cannot determine the owner of DOCKER_SOCKET: %s\n' "$docker_socket" >&2
+  exit 1
+fi
+
+export DOCKER_SOCKET_GID=${socket_ids##*:}
+
+exec docker compose --env-file "$env_file" -f "$compose_file" up --build -d