-z

Dockerfile

@@ -2,9 +2,10 @@ FROM tomcat:8-jdk8
 ARG WAR_LOCATION
 RUN rm -rf /usr/local/tomcat/webapps/* && \
     cd /usr/local/tomcat/webapps/ && \
-    wget -O vip-room.tar "${WAR_LOCATION}" && \
-    tar -xf vip-room.tar && \
-    rm -f vip-room.tar & \
+    wget -O vip-room.tar.gz "${WAR_LOCATION}" && \
+    tar -zxf vip-room.tar.gz && \
+    rm -f vip-room.tar.gz & \
     chown -R 1000:1000 /usr/local/tomcat/webapps/
 USER 1000
 CMD ["/usr/local/tomcat/bin/catalina.sh", "run"]
+