updating Dockerfile for Version 3

Dockerfile

@@ -1,21 +1,23 @@
 FROM python:3.7-slim
-RUN apt-get -y update && \
-  apt-get -y upgrade && \
-  apt-get install -y libpq-dev supervisor curl wget xz-utils bzip2 git gcc
+RUN apt -y update && \
+  apt -y upgrade && \
+  apt install -y libpq-dev supervisor curl wget xz-utils bzip2 git gcc gnupg2
+RUN curl -sL https://deb.nodesource.com/setup_11.x | bash -
+RUN apt -y install nodejs
+RUN npm install -g @angular/cli@latest
 RUN useradd -m openslides
 
 ## BUILD JS STUFF
-RUN wget https://nodejs.org/dist/v10.5.0/node-v10.5.0-linux-x64.tar.xz -P /tmp && \
-  cd /tmp && tar xfvJ node-v10.5.0-linux-x64.tar.xz && \
-  ln -sf /tmp/node-v10.5.0-linux-x64/bin/node /usr/bin/node
 RUN mkdir /app
 WORKDIR /app
 COPY . /app
 RUN chown -R openslides /app
 USER openslides
-RUN curl -o- -L https://yarnpkg.com/install.sh | bash
-RUN $HOME/.yarn/bin/yarn --non-interactive
-RUN node_modules/.bin/gulp --production
+RUN ng config -g cli.warnings.versionMismatch false && \
+  cd client && \
+  npm install
+RUN cd client && \
+  ng build --prod
 
 # INSTALL PYTHON DEPENDENCIES
 USER root
@@ -24,8 +26,7 @@ RUN pip install .[big_mode]
 ## Clean up
 RUN apt-get remove -y python3-pip wget curl
 RUN rm -rf /var/lib/apt/lists/* && \
-  rm -fr /app/bower_components && \
-  rm -fr /app/node_modules
+  rm -fr /app/client/node_modules
 
 RUN mkdir /data && chown openslides /data
 USER openslides

client/src/environments/environment.prod.ts

@@ -1,3 +1,4 @@
 export const environment = {
-    production: true
+    production: true,
+    urlPrefix: '/apps'
 };