Ubuntu 17.10 is deprecated - going to 17.10

Thanks @leferrad reminding me on this issue

Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:17.04
+FROM ubuntu:17.10
 
 MAINTAINER Simon Egli <docker_android_studio_860dd6@egli.online>
 
@@ -18,9 +18,9 @@ RUN useradd -u 1000 -g 1000 --create-home -r $USER
 RUN adduser $USER libvirt
 RUN adduser $USER kvm
 #Change password
-RUN echo "$USER:$USER" | chpasswd 
+RUN echo "$USER:$USER" | chpasswd
 #Make sudo passwordless
-RUN echo "${USER} ALL=(ALL) NOPASSWD:ALL" > /etc/sudoers.d/90-$USER 
+RUN echo "${USER} ALL=(ALL) NOPASSWD:ALL" > /etc/sudoers.d/90-$USER
 RUN usermod -aG sudo $USER
 RUN usermod -aG plugdev $USER