Simpler dockerfile, downloading SimStadt directly

Dockerfile

@@ -7,17 +7,23 @@ ARG JRE_URL=https://download.bell-sw.com/java/${JRE_VERSION}/${JRE_DEB}
 ARG INSEL_VERSION=8.3.4.0b
 ARG INSEL_DEB="insel_${INSEL_VERSION}_x64_mini.deb"
 ARG INSEL_URL=https://insel.eu/download/${INSEL_DEB}
+ARG SIMSTADT_URL=https://simstadt.hft-stuttgart.de/download/InstallFiles/SimStadt2_latest.zip
 
-# Java 17 + INSEL
+# Java 17 + INSEL + SimStadt itself.
 RUN apt-get update && \
-    apt-get install curl --no-install-recommends -y && \
+    apt-get install curl unzip --no-install-recommends -y && \
     curl ${JRE_URL} -o /tmp/${JRE_DEB} -k && \
     curl ${INSEL_URL} -o /tmp/${INSEL_DEB} -k && \
+    curl ${SIMSTADT_URL} -o /tmp/simstadt.zip -k && \
     apt-get install /tmp/${JRE_DEB} /tmp/${INSEL_DEB} --no-install-recommends -y && \
-    apt-get remove curl -y && \
+    mkdir -p /opt/SimStadt2 && \
+    unzip -q /tmp/simstadt.zip -d /opt/SimStadt2 && \
+    apt-get remove curl unzip -y && \
     rm -rf /var/lib/apt/lists/* && \
     apt-get clean && \
-    rm /tmp/${JRE_DEB} /tmp/${INSEL_DEB}
+    rm /tmp/${JRE_DEB} /tmp/${INSEL_DEB} /tmp/simstadt.zip
+
+ENV SIMSTADT_FOLDER=/opt/SimStadt2
 
 # SRA
 RUN apt-get update && \
@@ -40,7 +46,7 @@ ENV UV_PROJECT_ENVIRONMENT=/opt/venv
 ENV PATH="/opt/venv/bin:${PATH}"
 
 USER simstadt
-RUN mkdir -p /home/simstadt/app /home/simstadt/Desktop
+RUN mkdir -p /home/simstadt/app
 WORKDIR /home/simstadt/app
 
 FROM base AS cli
@@ -49,7 +55,6 @@ COPY --chown=simstadt:simstadt pyproject.toml uv.lock README.md ./
 RUN uv sync --frozen --no-install-project
 
 RUN uv pip install simstadt
-RUN simstadt --install
 
 COPY --chown=simstadt:simstadt tests ./tests