info in README, fixed up Dockerfile

Dockerfile

@@ -10,8 +10,8 @@ RUN apt-get update -y && \
         apt-get clean && \
         rm -rf /tmp/*
 
-ENV UID 1000
-ENV USERNAME ben
+ARG UID=1000
+ARG USERNAME=player
 RUN useradd -u ${UID} -G video,adm,sudo -ms /bin/bash ${USERNAME}
 
 USER ${USERNAME}
@@ -20,4 +20,5 @@ WORKDIR /home/${USERNAME}
 ENV USER ${USERNAME}
 ENV HOME /home/${USERNAME}
 
-CMD /bin/bash
+ENTRYPOINT ["playonlinux"]
+CMD []

README.md

@@ -1,2 +1,46 @@
 # playonlinux-docker
 
+a docker container with PlayOnLinux, base image is Ubuntu 22.04.
+
+## build
+
+with default `$USERNAME=player` and `$UID=1000`:
+
+```shell
+docker build -t playonlinux .
+```
+
+if you need or want to use a different UID or username:
+
+```shell
+docker build --build-arg UID=1001 --build-arg USERNAME=user -t playonlinux .
+```
+
+## run
+
+start PlayOnLinux:
+
+```shell
+mkdir ~/playonlinux
+
+docker run --rm -it --privileged \
+  --device /dev/dri/card0:/dev/dri/card0 \
+  -e DISPLAY=:0 \
+  -v /tmp/.X11-unix:/tmp/.X11-unix:rw \
+  -v /dev/snd:/dev/snd:rw \
+  -v ~/playonlinux:/home/ben:rw \
+  playonlinux
+```
+
+starting Steam:
+
+```shell
+docker run --rm -it --privileged \
+  --device /dev/dri/card0:/dev/dri/card0 \
+  -e DISPLAY=:0 \
+  -v /tmp/.X11-unix:/tmp/.X11-unix:rw \
+  -v /dev/snd:/dev/snd:rw \
+  -v ~/playonlinux:/home/ben:rw \
+  playonlinux --run Steam
+```
+

build.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+docker build --build-arg UID=1000 --build-arg USERNAME=ben -t playonlinux .

steam.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+mkdir -p ~/playonlinux
+
+docker run --rm -it --privileged \
+  --device /dev/dri/card0:/dev/dri/card0 \
+  -e DISPLAY=:0 \
+  -v /tmp/.X11-unix:/tmp/.X11-unix:rw \
+  -v /dev/snd:/dev/snd:rw \
+  -v ~/playonlinux:/home/ben:rw \
+  playonlinux --run Steam