Upgrade Zandronum to 3.1

Dockerfile

@@ -5,17 +5,17 @@ RUN apt-get update -y && apt-get install -y wget bzip2 libsdl1.2debian unzip
 WORKDIR /src
 
 # Download and extract soruce
-RUN wget https://zandronum.com/downloads/zandronum3.0-linux-x86_64.tar.bz2
+RUN wget https://zandronum.com/downloads/zandronum3.1-linux-x86_64.tar.bz2
 RUN tar xjf zandronum*.tar.bz2
 
 # Extract libs used by server
 RUN mkdir -p /export/libs
-COPY extract_server.sh .
-RUN bash ./extract_server.sh zandronum-server /export/libs
-RUN cp libcrypto* /export/libs
+COPY extract_libs.sh .
+RUN bash ./extract_libs.sh zandronum-server /export/libs
+RUN cp *.so /export/libs
 
 # Copy server and required files to /export
-RUN cp zandronum-server zandronum.pk3 /export/
+RUN cp zandronum-server zandronum.pk3 skulltag_actors.pk3 /export/
 
 # Download FreeDM WAD
 RUN wget https://github.com/freedoom/freedoom/releases/download/v0.12.1/freedm-0.12.1.zip
@@ -25,7 +25,8 @@ RUN cd freedm* && cp freedm.wad /export
 # Libraries that aren't in busybox or alpines musl are needed :(
 FROM debian:stable-slim
 
-RUN apt-get update -y && apt-get install -y wget
+RUN apt-get update -y
+RUN apt-get install -y wget libsdl1.2debian libjpeg62
 RUN apt-get clean && apt-get autoclean
 RUN rm -rf /var/lib/apt/lists/*