diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a599a6dc..2d7f3cf4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,6 +12,7 @@ variables:
   DOCROOT: /var/www/
 
 stages:
+  - build-frontend
   - build
   - test
   - release
@@ -26,20 +27,20 @@ stages:
   before_script:
     - docker login -u gitlab-ci-token -p "${CI_JOB_TOKEN}" "${CI_REGISTRY}"
 
+build-image.nginx:
+  <<: *docker_definition
+  stage: build-frontend
+  script:
+    - docker build --pull -t "${TEST_IMAGE}-nginx" -f contrib/nginx/Dockerfile .
+    - docker push "${TEST_IMAGE}-nginx"
+
 build-image:
   <<: *docker_definition
   stage: build
   script:
-    - docker build --pull -t "${TEST_IMAGE}" -f contrib/Dockerfile .
+    - docker build --pull --build-arg NGINX_IMAGE="${TEST_IMAGE}-nginx" -t "${TEST_IMAGE}" -f contrib/Dockerfile .
     - docker push "${TEST_IMAGE}"
 
-build-image.nginx:
-  <<: *docker_definition
-  stage: build
-  script:
-    - docker build --pull -t "${TEST_IMAGE}.nginx" -f contrib/nginx/Dockerfile .
-    - docker push "${TEST_IMAGE}.nginx"
-
 test:
   image: ${TEST_IMAGE}
   stage: test
diff --git a/README.md b/README.md
index f564c71d..c3a650c9 100644
--- a/README.md
+++ b/README.md
@@ -91,8 +91,8 @@ docker-compose build
 
 or to build the containers separately
 ```bash
-docker build -f contrib/Dockerfile . -t engelsystem
 docker build -f contrib/nginx/Dockerfile . -t engelsystem-nginx
+docker build -f contrib/Dockerfile . -t engelsystem
 ```
 
 Import database
diff --git a/composer.json b/composer.json
index 10e34804..622fbdfa 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,6 @@
         "psr/log": "^1.0",
         "symfony/http-foundation": "^3.3",
         "symfony/psr-http-message-bridge": "^1.0",
-        "twbs/bootstrap": "^3.3",
         "twig/extensions": "^1.5",
         "twig/twig": "^2.5",
         "zendframework/zend-diactoros": "^1.7"
diff --git a/contrib/Dockerfile b/contrib/Dockerfile
index 5d40bafb..665fb426 100644
--- a/contrib/Dockerfile
+++ b/contrib/Dockerfile
@@ -1,8 +1,14 @@
+# Setup
+ARG NGINX_IMAGE=engelsystem-nginx:latest
+
+# composer install
 FROM composer AS composer
 COPY composer.json /app/
 RUN composer --no-ansi install --no-dev --ignore-platform-reqs
 RUN composer --no-ansi dump-autoload --optimize
 
+# Use frontend container for assets
+FROM ${NGINX_IMAGE} AS frontend
 
 # Intermediate container for less layers
 FROM alpine as data
@@ -11,6 +17,7 @@ COPY config/ /app/config
 COPY db/ /app/db
 COPY includes/ /app/includes
 COPY public/ /app/public
+COPY --from=frontend /var/www/public/assets/ /app/public/assets
 COPY resources/lang /app/resources/lang
 COPY resources/views /app/resources/views
 COPY src/ /app/src
@@ -22,6 +29,7 @@ COPY --from=composer /app/composer.lock /app/
 
 RUN rm -f /app/config/config.php
 
+# Build the PHP container
 FROM php:7-fpm-alpine
 WORKDIR /var/www
 COPY --from=data /app/ /var/www