bugfixing to run command as user deploy

Dockerfile

@@ -37,6 +37,13 @@ ADD dav_svn.conf /etc/apache2/sites-enabled/dav_svn.conf
 #RUN sed -i.bak 's/LogLevel warn/LogLevel debug/' /etc/apache2/apache2.conf
 RUN sed -i.bak 's/Listen 80/Listen 80\nListen 8000/' /etc/apache2/ports.conf
 
+# allow sudo http-foreground for deploy user
+ADD sudoer_deploy /etc/sudoers.d/deploy
+RUN chmod 0440 /etc/sudoers.d/deploy
+
+# switch to user deploy
+USER deploy
+
 # setup runtime variables for apache
 ENV APACHE_PID_FILE=/var/run/apache2/apache2.pid 
 ENV APACHE_LOCK_DIR=/var/lock/apache2 
@@ -45,13 +52,6 @@ ENV APACHE_RUN_DIR=/var/run/apache2
 ENV APACHE_RUN_USER=deploy
 ENV APACHE_RUN_GROUP=deploy
 
-# allow sudo http-foreground for deploy user
-ADD sudoer_deploy /etc/sudoers.d/deploy
-RUN chmod 0440 /etc/sudoers.d/deploy
-
-# switch to user deploy
-USER deploy
-
 # set path to include ~/.local/bin
 ENV PATH "$PATH:/home/deploy/.local/bin"
 
@@ -63,4 +63,4 @@ RUN pip install git+https://git.cpi.imtek.uni-freiburg.de/CPI/elab-users.git
 WORKDIR /data
 
 # Start httpd as root, but will switch to deploy user thanks to env variable
-CMD ["sudo", "APACHE_RUN_DIR=/var/run/apache2", "httpd-foreground"]
+CMD ["sudo", "--preserve-env", "httpd-foreground"]