diff --git a/Dockerfile b/Dockerfile
index 3ef9a44..4988607 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -71,6 +71,7 @@ RUN echo "deb-src http://deb.debian.org/debian buster main contrib" >> /etc/apt/
     && mkdir -p /var/log/squid \
     && cp src/auth/basic/LDAP/basic_ldap_auth /usr/lib/squid/ \
     && cp src/auth/digest/LDAP/digest_ldap_auth /usr/lib/squid/ \
+    && cp src/auth/negotiate/kerberos/negotiate_kerberos_auth /usr/lib/squid/ \
     && cp src/log/DB/log_db_daemon /usr/lib/squid/ \
     && cp src/log/file/log_file_daemon /usr/lib/squid/ \
     && cp src/unlinkd /usr/lib/squid/ \
@@ -97,8 +98,7 @@ RUN echo "deb-src http://deb.debian.org/debian buster main contrib" >> /etc/apt/
     && chown -Rf squid /etc/squid \
     && chown -Rf squid /usr/lib/squid \
     && chown -Rf squid /var/log/squid \
-    && chown -Rf squid /var/spool/squid \
-    && rm /etc/localtime \
+    && chown -Rf squid /var/spool/squid 
 # Clean
     && apt-get remove -y --purge libssl-dev wget make gcc g++ xz-utils libldap2-dev libpam0g-dev libdb-dev cdbs libsasl2-dev debhelper libcppunit-dev libkrb5-dev comerr-dev libcap2-dev libecap3-dev libexpat1-dev libxml2-dev autotools-dev libltdl-dev dpkg-dev pkg-config libnetfilter-conntrack-dev nettle-dev libgnutls28-dev lsb-release libldap2-dev libpam0g-dev libdb-dev cdbs libsasl2-dev debhelper libcppunit-dev libkrb5-dev comerr-dev libcap2-dev libecap3-dev libexpat1-dev libxml2-dev autotools-dev libltdl-dev dpkg-dev pkg-config libnetfilter-conntrack-dev nettle-dev libgnutls28-dev lsb-release \
     && apt-get auto-remove -y && apt-get clean autoclean \