Restructured Dockerfile, less context-switching, less layers needed, …

…improved security and formating, tested also backups

Dockerfile

@@ -4,7 +4,7 @@ LABEL org.opencontainers.image.authors="Sebastian Schmidt"
 LABEL org.opencontainers.image.source="https://github.com/jammsen/docker-palworld-dedicated-server"
 
 RUN apt-get update \
-    && apt-get install -y --no-install-recommends procps xdg-user-dirs \
+    && apt-get install -y --no-install-recommends --no-install-suggests procps xdg-user-dirs \
     && apt-get clean \
     && apt-get autoremove -y \
     && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
@@ -15,10 +15,21 @@ ENV SUPERCRONIC_URL=https://github.com/aptible/supercronic/releases/download/v0.
     SUPERCRONIC_SHA1SUM=cd48d45c4b10f3f0bfdd3a57d054cd05ac96812b
 
 RUN curl -fsSLO "$SUPERCRONIC_URL" \
- && echo "${SUPERCRONIC_SHA1SUM}  ${SUPERCRONIC}" | sha1sum -c - \
- && chmod +x "$SUPERCRONIC" \
- && mv "$SUPERCRONIC" "/usr/local/bin/${SUPERCRONIC}" \
- && ln -s "/usr/local/bin/${SUPERCRONIC}" /usr/local/bin/supercronic
+    && echo "${SUPERCRONIC_SHA1SUM}  ${SUPERCRONIC}" | sha1sum -c - \
+    && chmod +x "$SUPERCRONIC" \
+    && mv "$SUPERCRONIC" "/usr/local/bin/${SUPERCRONIC}" \
+    && ln -s "/usr/local/bin/${SUPERCRONIC}" /usr/local/bin/supercronic
+
+ADD --chown=steam:steam --chmod=755 servermanager.sh /servermanager.sh
+ADD --chown=steam:steam --chmod=755 backupmanager.sh /backupmanager.sh
+
+EXPOSE 8211/udp
+EXPOSE 25575/tcp
+
+RUN mkdir /palworld \
+    && chown steam:steam /palworld
+
+VOLUME [ "/palworld" ]
 
 USER steam
 
@@ -40,19 +51,4 @@ ENV DEBIAN_FRONTEND=noninteractive \
     BACKUP_ENABLED=true \
     BACKUP_CRON_EXPRESSION="0 * * * *"
 
-USER root
-
-RUN mkdir /palworld
-RUN chown steam:steam /palworld
-
-VOLUME [ "/palworld" ]
-
-EXPOSE 8211/udp
-EXPOSE 25575/tcp
-
-ADD --chmod=777 servermanager.sh /servermanager.sh
-ADD --chmod=777 backupmanager.sh /backupmanager.sh
-
-USER steam
-
 CMD ["/servermanager.sh"]