update build instructuions, support podman

README.md

@@ -48,6 +48,13 @@ The RoboCup @Home Organizing Committee is always looking for volunteers to assis
 
 Contributions and improvements to the rulebook are always welcome in the form of pull requests.
 
+### Building
+
+The easiest way is to utilize the `docker.io/texlive/texlive:TL2022-historic` image to build everything.
+
+For convenience, you should execute `build.sh` to make the PDFs with a container runtime. (This requires either `docker` or `podman` to be installed)
+
+
 ### Recorded data
 Data is recorded from the robots during the competition. It is available through the following links:
 

build.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+IMAGE=docker.io/texlive/texlive:TL2022-historic
+
+if command -v podman >/dev/null 2>&1
+then
+    podman run --rm --net=none -w /data/ -v`pwd`:/data -e TERM=xterm-256color $IMAGE make all
+else
+    docker run --rm --user="$(id -u):$(id -g)" --net=none -w /data/ -v`pwd`:/data -e TERM=xterm-256color $IMAGE make all
+fi
+