Add sniper platform image (#220)

* Add sniper platform image

* steamcmd sniper force TARGETOS and TARGETARCH

---------

Co-authored-by: Quinten <67589015+QuintenQVD0@users.noreply.github.com>

.github/workflows/steamcmd.yml

@@ -20,6 +20,7 @@ jobs:
           - ubuntu
           - dotnet
           - proton   
+          - sniper
     steps:
       - uses: actions/checkout@v4
       - uses: docker/setup-buildx-action@v3

README.md

@@ -272,6 +272,8 @@ is tagged correctly.
   * `ghcr.io/parkervcp/steamcmd:dotnet`
 * [`SteamCMD Proton`](/steamcmd/proton)
   * `ghcr.io/parkervcp/steamcmd:proton`
+* [`SteamCMD Sniper latest`](/steamcmd/sniper)
+  * `ghcr.io/parkervcp/steamcmd:sniper`
 * [`SteamCMD Ubuntu latest LTS`](/steamcmd/ubuntu)
   * `ghcr.io/parkervcp/steamcmd:ubuntu`
 

steamcmd/sniper/Dockerfile

@@ -0,0 +1,31 @@
+# ---------------------------------------------
+# Steam Sniper image (RT3)
+# ---------------------------------------------
+FROM         --platform=$TARGETOS/$TARGETARCH registry.gitlab.steamos.cloud/steamrt/sniper/platform:latest-container-runtime-depot
+
+LABEL       author="Alexander Ballauf" maintainer="admin@ballaual.de"
+LABEL       org.opencontainers.image.description SteamRT3 Platform image for Pterodactyl Source engine servers. 
+
+## install required packages
+RUN         dpkg --add-architecture i386 \
+            && apt-get update \
+            && apt-get upgrade -y \
+            && apt-get install -y tar curl gcc g++ lib32gcc-s1 libgcc1 libcurl4-gnutls-dev:i386 libssl1.1:i386 libcurl4:i386 lib32tinfo6 libtinfo6:i386 lib32z1 lib32stdc++6 libncurses5:i386 libcurl3-gnutls:i386 libsdl2-2.0-0:i386 libsdl2-2.0-0 iproute2 gdb libsdl1.2debian libfontconfig1 telnet net-tools netcat tzdata numactl xvfb tini libc6 \
+            && useradd -m -d /home/container container
+
+## install rcon
+RUN         cd /tmp/ \
+            && curl -sSL https://github.com/gorcon/rcon-cli/releases/download/v0.10.3/rcon-0.10.3-amd64_linux.tar.gz > rcon.tar.gz \
+            && tar xvf rcon.tar.gz \
+            && mv rcon-0.10.3-amd64_linux/rcon /usr/local/bin/
+
+USER        container
+ENV         USER=container HOME=/home/container
+WORKDIR     /home/container
+
+STOPSIGNAL SIGINT
+
+COPY        --chown=container:container ./../entrypoint.sh /entrypoint.sh
+RUN         chmod +x /entrypoint.sh
+ENTRYPOINT  ["/usr/bin/tini", "-g", "--"]
+CMD         ["/entrypoint.sh"]