diff --git a/Dockerfile b/Dockerfile
index d7b7081..32e79c3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,12 +3,18 @@
 # Environment: Java (glibc support)
 # Minimum Panel Version: 0.6.0
 # ----------------------------------
-FROM	azul/zulu-openjdk-debian:8
+FROM	debian:9.11-slim
 
 LABEL	author="WGOS" maintainer="wgos@wgos.org"
 
 RUN	apt update && apt upgrade -y \
-	&& apt install -y curl ca-certificates openssl git tar sqlite fontconfig tzdata iproute2 \
+	&& apt install -y gnupg \
+	&& apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 \
+		--recv-keys 0xB1998361219BD9C9 \
+	&& echo "deb http://repos.azulsystems.com/debian stable main" >> /etc/apt/sources.list.d/zulu.list \
+	&& mkdir -p /usr/share/man/man1 \
+	&& apt update \
+	&& apt install -y --no-install-recommends tzdata zre-8 \
 	&& useradd -d /home/container -m container
  
 USER	container
@@ -18,4 +24,4 @@ WORKDIR	/home/container
 
 COPY	./entrypoint.sh /entrypoint.sh
 
-CMD	["/bin/bash", "/entrypoint.sh"]
\ No newline at end of file
+CMD	["/bin/bash", "/entrypoint.sh"]