switch to non-root user in container

terraria/.dockerignore

@@ -0,0 +1 @@
+worlds/

terraria/Dockerfile

@@ -1,19 +1,21 @@
 FROM ubuntu:22.04
 
-WORKDIR /root
-
 RUN apt-get update && apt-get upgrade
 RUN apt-get install -y wget unzip
 
+RUN useradd -m matt
+USER matt
+WORKDIR /home/matt
+
 # from https://terraria.fandom.com/wiki/Server (currently 1.4.4.9)
 RUN wget https://terraria.org/api/download/pc-dedicated-server/terraria-server-1449.zip
 RUN unzip terraria-server-1449.zip && rm terraria-server-1449.zip
 RUN mv 1449/ server/
 
-COPY entry.sh ./
+COPY --chown=matt:matt entry.sh ./
 
-WORKDIR /root/server/Linux
+WORKDIR /home/matt/server/Linux
 
 RUN chmod +x TerrariaServer.bin.x86_64
-COPY password.default ./password.txt
-COPY config.txt password.tx[t] ./
+COPY --chown=matt:matt password.default ./password.txt
+COPY --chown=matt:matt config.txt password.tx[t] ./

terraria/config.txt

@@ -1,5 +1,5 @@
-world=/root/worlds/default.wld
+world=/home/matt/worlds/default.wld
 autocreate=3
 worldname=default
 difficulty=2
-worldpath=/root/worlds
+worldpath=/home/matt/worlds