move /home/$USERNAME to always be /home/user

Dockerfile

@@ -25,7 +25,7 @@ RUN \
     apt -y upgrade && \
     apt -y install $SYSTEM_PACKAGES && \
     groupadd -g $GID_TO_ADD $USERNAME_TO_ADD && \
-    useradd -u $UID_TO_ADD -g $GID_TO_ADD -s /bin/bash $USERNAME_TO_ADD && \
+    useradd -u $UID_TO_ADD -g $GID_TO_ADD --home-dir /home/user -s /bin/bash $USERNAME_TO_ADD && \
     usermod -p '*' $USERNAME_TO_ADD && \
     echo $USERNAME_TO_ADD > /etc/workuser && \
     go get -v -u github.com/peterbourgon/runsvinit && \

build/run.sh

@@ -35,7 +35,6 @@ pip3 install black
 # install vim-go
 
 sudo \
-    --preserve-env=USERNAME_TO_ADD \
     --set-home \
     --non-interactive \
     -u $USERNAME_TO_ADD \

build/runuser.sh

@@ -11,11 +11,6 @@ U="$USERNAME_TO_ADD"
 # original home
 OH="/hosthome"
 
-# container home
-export HOME="/home/$U"
-
-rsync -avP /home/template/ $HOME/
-
 # link ~/.home to original home
 ln -s "/hosthome" $HOME/.home