Configurable user parameters (#2)

Update README

Configurable user parameters

Co-authored-by: Francesc Gordillo <yenien@posteo.net>
Reviewed-on: http://gitea.hatthieves.es/manalejandro/docker-wahay/pulls/2

wahay/Dockerfile

@@ -1,11 +1,18 @@
 FROM golang
-ENV UNAME mumble
+ARG UID=1000
+ARG GID=1000
+ARG UNAME=mumble
+
+ENV UID=${UID} \
+    GID=${GID} \
+    UNAME=${UNAME}
+
 RUN apt update && apt upgrade -y && apt install -y curl lsb-release dirmngr pulseaudio-utils && apt clean
 RUN curl -s https://dl.autonomia.digital/debian/keys.asc | apt-key add -
 RUN echo deb https://dl.autonomia.digital/debian $(lsb_release -c | cut -f 2) main | tee /etc/apt/sources.list.d/wahay.list
 RUN echo deb-src https://dl.autonomia.digital/debian $(lsb_release -c | cut -f 2) main | tee -a /etc/apt/sources.list.d/wahay.list
 RUN apt update && apt install -y wahay && apt clean
-RUN export UNAME=$UNAME UID=1000 GID=1000 && \
+RUN export UNAME=$UNAME UID=$UID GID=$GID && \
     mkdir -p "/home/${UNAME}" && \
     echo "${UNAME}:x:${UID}:${GID}:${UNAME} User,,,:/home/${UNAME}:/bin/bash" >> /etc/passwd && \
     echo "${UNAME}:x:${UID}:" >> /etc/group && \
@@ -15,4 +22,4 @@ RUN export UNAME=$UNAME UID=1000 GID=1000 && \
     chown ${UID}:${GID} -R /home/${UNAME} && \
     gpasswd -a ${UNAME} audio
 USER ${UNAME}
-ENTRYPOINT [ "wahay" ]
+ENTRYPOINT [ "wahay" ]