diff --git a/Dockerfile b/Dockerfile
index 546f524a1026..ceb3b1e2d920 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM ubuntu:22.04
 
 RUN apt-get update
-RUN apt-get install -y build-essential git subversion cvs unzip whois ncurses-dev bc mercurial pmount gcc-multilib g++-multilib libgmp3-dev libmpc-dev liblz4-tool
+RUN apt-get install -y file build-essential git subversion cvs unzip whois ncurses-dev bc mercurial pmount gcc-multilib g++-multilib libgmp3-dev libmpc-dev liblz4-tool
 COPY build.sh /usr/local/bin
 #RUN ls /usr/local/bin
 #RUN cat /usr/local/bin/build.sh