Agregar modulo de instalacion de Docker

- modules/docker.sh: instala Docker Engine (docker-ce, docker-ce-cli,
  containerd.io, docker-buildx-plugin, docker-compose-plugin) via repositorio
  apt oficial de Docker; agrega el usuario al grupo docker para operar sin sudo;
  instala Lazydocker en ~/.local/bin/ desde la ultima release de GitHub
- config/modules: docker corre despues de registry y antes de thunderbird
- CLAUDE.md y README.md: documentan el nuevo modulo en la tabla de orden de ejecucion

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

CLAUDE.md

@@ -37,6 +37,7 @@ Current modules in execution order:
 - `bootstrap` — installs `yq` and `age` (required by all other modules)
 - `ssh` — decrypts `secrets/sshKeys.tar.gz.age` with `age` and installs keys into `~/.ssh`
 - `registry` — reads `config/registry.yaml` and applies every entry (packages, dotfiles, services, drivers, audio)
+- `docker` — installs Docker Engine, Docker Compose plugin, adds user to `docker` group, and installs Lazydocker
 - `thunderbird` — installs Thunderbird (snap) and restores profile from `secrets/thunderbirdProfile.zip`
 - `claudeCode` — configures the Anthropic apt repository and installs `claude-code`
 - `easyEffects` — restores EasyEffects config and presets from `secrets/easyEffectsConfig.zip`

README.md

@@ -65,6 +65,7 @@ El orden está definido en `config/modules` (un módulo por línea, `#` para com
 | `bootstrap` | Instala `yq` y `age` (requeridos por los demás módulos) |
 | `ssh` | Descifra e instala claves SSH en `~/.ssh` |
 | `registry` | Aplica todo lo declarado en `config/registry.yaml` |
+| `docker` | Instala Docker Engine, Docker Compose, agrega el usuario al grupo `docker` e instala Lazydocker |
 | `thunderbird` | Instala Thunderbird (snap) y restaura el perfil |
 | `claudeCode` | Configura el repositorio apt de Anthropic e instala `claude-code` |
 | `easyEffects` | Restaura configuración y presets de EasyEffects |

config/modules

@@ -5,6 +5,7 @@
 bootstrap
 ssh
 registry
+docker
 thunderbird
 claudeCode
 easyEffects

modules/docker.sh

@@ -0,0 +1,102 @@
+#!/usr/bin/env bash
+set -euo pipefail
+source "$stpRoot/lib/log.sh"
+source "$stpRoot/lib/utils.sh"
+
+readonly dockerKeyring="/etc/apt/keyrings/docker.asc"
+readonly dockerSources="/etc/apt/sources.list.d/docker.list"
+
+dockerIsInstalled() {
+    util::cmdExists docker
+}
+
+dockerRepositoryIsConfigured() {
+    [[ -f "$dockerSources" ]]
+}
+
+userIsInDockerGroup() {
+    groups "$USER" | grep -qw docker
+}
+
+lazydockerIsInstalled() {
+    util::cmdExists lazydocker
+}
+
+latestGithubReleaseTag() {
+    local repository="$1"
+    curl -fsSL "https://api.github.com/repos/${repository}/releases/latest" \
+        | grep '"tag_name"' \
+        | cut -d'"' -f4
+}
+
+addDockerSigningKey() {
+    sudo install -m 0755 -d /etc/apt/keyrings
+    curl -fsSL https://download.docker.com/linux/ubuntu/gpg \
+        | sudo tee "$dockerKeyring" > /dev/null
+    sudo chmod a+r "$dockerKeyring"
+    log::ok "Clave GPG de Docker instalada"
+}
+
+addDockerRepository() {
+    local ubuntuCodename
+    ubuntuCodename="$(. /etc/os-release && echo "$VERSION_CODENAME")"
+    echo "deb [arch=amd64 signed-by=${dockerKeyring}] https://download.docker.com/linux/ubuntu ${ubuntuCodename} stable" \
+        | sudo tee "$dockerSources" > /dev/null
+    sudo apt-get update -qq
+    log::ok "Repositorio Docker configurado para Ubuntu ${ubuntuCodename}"
+}
+
+installDockerPackages() {
+    sudo apt-get install -y \
+        docker-ce \
+        docker-ce-cli \
+        containerd.io \
+        docker-buildx-plugin \
+        docker-compose-plugin
+    log::ok "Docker Engine y Docker Compose instalados"
+}
+
+addUserToDockerGroup() {
+    sudo usermod -aG docker "$USER"
+    log::ok "Usuario $USER agregado al grupo docker"
+    log::info "Cerrá sesión y volvé a entrar para usar Docker sin sudo"
+}
+
+installLazydocker() {
+    local version versionNumber temporaryDirectory
+    version="$(latestGithubReleaseTag "jesseduffield/lazydocker")"
+    versionNumber="${version#v}"
+    temporaryDirectory="$(mktemp -d)"
+    trap 'rm -rf "$temporaryDirectory"' RETURN
+    curl -fsSL \
+        "https://github.com/jesseduffield/lazydocker/releases/download/${version}/lazydocker_${versionNumber}_Linux_x86_64.tar.gz" \
+        | tar -xz -C "$temporaryDirectory"
+    mkdir -p "$HOME/.local/bin"
+    mv "$temporaryDirectory/lazydocker" "$HOME/.local/bin/lazydocker"
+    log::ok "Lazydocker ${version} instalado en ~/.local/bin/"
+}
+
+if dockerIsInstalled; then
+    log::info "Docker ya instalado: $(docker --version)"
+else
+    log::info "Instalando Docker Engine..."
+    util::requireSudo
+    if ! dockerRepositoryIsConfigured; then
+        addDockerSigningKey
+        addDockerRepository
+    fi
+    installDockerPackages
+fi
+
+if userIsInDockerGroup; then
+    log::info "Usuario $USER ya en el grupo docker"
+else
+    util::requireSudo
+    addUserToDockerGroup
+fi
+
+if lazydockerIsInstalled; then
+    log::info "Lazydocker ya instalado"
+else
+    installLazydocker
+fi