diff --git a/Dockerfile b/Dockerfile
index d4f3324..fa412ca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,9 @@ ENV STEAM_PATH="/home/steam" \
 	SERVER_PATH="/home/steam/server" \
 	GROUP_ID=10000 \
 	USER_ID=10000 \
-	DOCKER_USER=steam
+	DOCKER_USER=steam \
+	\
+	DEBIAN_FRONTEND="noninteractive"
 	
 ENTRYPOINT ["./home/entrypoint.sh"]
 CMD ["-game", "garrysmod", "+gamemode", "sandbox", "+map", "gm_flatgrass"]
@@ -15,13 +17,14 @@ COPY ["entrypoint.sh", "/home/"]
 
 # removed dep. lib32gcc1 libtcmalloc-minimal4:i386 gdb libreadline5 
 RUN dpkg --add-architecture i386 && \
-	apt-get update -y && apt-get upgrade -y && \
-	apt-get install -y wget tar gzip ca-certificates locales && \
-	apt-get install -y postfix curl wget file bzip2 gzip unzip bsdmainutils python util-linux ca-certificates binutils bc jq tmux lib32gcc1 libstdc++6 libstdc++6:i386 lib32tinfo5 && \
-	apt-get install -y gcc lib32stdc++6 gdb net-tools lib32z1 zlib1g zlibc curl && \
+	apt-get update -y && \
+	apt-get install -y mailutils postfix curl wget file bzip2 gzip unzip bsdmainutils python util-linux ca-certificates binutils bc jq tmux lib32gcc1 libstdc++6 libstdc++6:i386 lib32tinfo5 && \
+	locales \
+	\
 	chmod a=rx /home/entrypoint.sh && \
 	\
-	locale-gen en_US.UTF-8	
+	locale-gen en_US.UTF-8 && \
+	wget -O linuxgsm.sh https://linuxgsm.sh && chmod +x linuxgsm.sh && bash linuxgsm.sh gmodserver
 
 USER "root:root"