diff --git a/Dockerfile b/Dockerfile
index 1aa97b1..3781772 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,8 +6,10 @@ FROM alpine:3.13.5 AS build
 MAINTAINER "f <f@sutty.nl>"
 
 ARG RAILS_MASTER_KEY
+ARG BRANCH
 
 # Un entorno base
+ENV BRANCH=$BRANCH
 ENV SECRET_KEY_BASE solo_es_necesaria_para_correr_rake
 ENV RAILS_ENV production
 ENV RAILS_MASTER_KEY=$RAILS_MASTER_KEY
@@ -47,17 +49,16 @@ COPY --chown=app:www-data ./.git/ ./.git/
 # Hacer un clon limpio del repositorio en lugar de copiar todos los
 # archivos
 RUN cd .. && git clone sutty checkout
+RUN cd ../checkout && git checkout $BRANCH
 
 WORKDIR /home/app/checkout
 # Traer las gemas:
+RUN rm -r ./vendor
 RUN mv ../sutty/vendor ./vendor
 RUN mv ../sutty/.bundle ./.bundle
 
 # Instalar secretos
 COPY --chown=app:root ./config/credentials.yml.enc ./config/
-# Traer los assets pre-compilados
-COPY --chown=app:www-data ./public/assets ./public/assets
-COPY --chown=app:www-data ./public/packs ./public/packs
 
 # Eliminar la necesidad de un runtime JS en producción, porque los
 # assets ya están pre-compilados.
@@ -110,13 +111,10 @@ RUN rm -rf /srv/http/_sites /srv/http/_deploy
 RUN ln -s data/_storage /srv/http/_storage
 RUN ln -s data/_sites /srv/http/_sites
 RUN ln -s data/_deploy /srv/http/_deploy
-RUN ln -s data/_public /srv/http/_public
 RUN ln -s data/_private /srv/http/_private
 
 # Volver a root para cerrar la compilación
 USER root
-# Sincronizar los assets a un directorio compartido
-RUN install -m 755 /srv/http/sync_assets.sh /usr/local/bin/sync_assets
 # Instalar la configuración de monit
 RUN install -m 640 -o root -g root /srv/http/monit.conf /etc/monit.d/sutty.conf
 RUN apk add --no-cache daemonize ruby-webrick
diff --git a/Makefile b/Makefile
index af46648..c7f4fd3 100644
--- a/Makefile
+++ b/Makefile
@@ -11,6 +11,20 @@ assets := package.json yarn.lock $(shell find app/assets/ app/javascript/ -type
 alpine_version := 3.13
 hain ?= ../haini.sh/haini.sh
 
+env ?= staging
+
+ifeq ($(env),production)
+container ?= sutty
+branch ?= rails
+public ?= public
+endif
+
+ifeq ($(env),staging)
+container := staging
+branch := staging
+public := staging
+endif
+
 export
 
 public/packs/manifest.json.br: $(assets)
@@ -49,12 +63,12 @@ clean:
 
 # Generar la imagen Docker
 build: assets
-	time docker build --build-arg="RAILS_MASTER_KEY=`cat config/master.key`" -t sutty/sutty .
-	docker tag sutty/sutty:latest sutty:keep
+	time docker build --build-arg="BRANCH=$(branch)" --build-arg="RAILS_MASTER_KEY=`cat config/master.key`" -t sutty/$(container) .
+	docker tag sutty/$(container):latest sutty:keep
 
 save:
-	time docker save sutty/sutty:latest | ssh root@$(delegate).sutty.nl docker load
-	date +%F | xargs git tag -f 
+	time docker save sutty/$(container):latest | ssh root@$(delegate).sutty.nl docker load
+	date +%F | xargs -I {} git tag -f $(container)-{}
 	@echo -e "\a"
 
 # proyectos.
@@ -100,13 +114,14 @@ $(dirs):
 
 ota: assets
 	sudo chgrp -R 82 public/
-	rsync -avi --delete-after public/ athshe:/srv/sutty/srv/http/data/_public/
+	rsync -avi --delete-after public/ $(delegate):/srv/sutty/srv/http/data/_$(public)/
+	ssh $(delegate) docker exec $(container) sh -c "cat /srv/http/tmp/puma.pid | xargs -r kill -USR2"
 
 # Hotfixes
 commit ?= origin/rails
 ota-rb:
 	umask 022; git format-patch $(commit)
-	scp ./0*.patch root@athshe.sutty.nl:/tmp/
+	scp ./0*.patch $(delegate):/tmp/
 	rm ./0*.patch
 
 /etc/hosts: always
diff --git a/monit.conf b/monit.conf
index b8c9e44..f574c56 100644
--- a/monit.conf
+++ b/monit.conf
@@ -6,10 +6,6 @@ check process prometheus with pidfile /tmp/prometheus.pid
   start program = "/usr/local/bin/sutty prometheus"
   stop program = "/bin/sh -c 'cat /tmp/prometheus.pid | xargs kill'"
 
-check program sync_assets
-  with path /usr/local/bin/sync_assets
-  if status = 0 then unmonitor
-
 check program blazer_5m
   with path "/bin/sh -c 'cd /srv/http && foreman start blazer_5m'"
     as uid "app" and gid "www-data"
diff --git a/sync_assets.sh b/sync_assets.sh
deleted file mode 100644
index 1c1a6ca..0000000
--- a/sync_assets.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/sh
-# Sincronizar assets desde public a _public para que estén disponibles
-# en el contenedor web.
-
-rsync -a --delete-after /srv/http/public/ /srv/http/_public/