diff --git a/CHANGELOG.md b/CHANGELOG.md
index bd39581..6a19f23 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,7 @@ All notable changes to this project will be documented in this file.
 - removed rules iptables block https comunication captiveflask #37 [mh4x0f]
 
 ### Fixed
+- fixed set a tag version at the base image in Dockerfile #43 [mh4x0f]
 - fixed responder3 object has no attribute logger #39 [mh4x0f]
 - fixed DHCP offer Apple device can’t connect to ap #32 [mh4x0f]
 - fixed get multi language options on captiveflask plugin #30 [mh4x0f]
diff --git a/Dockerfile b/Dockerfile
index fc342d7..91deb9c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu
+FROM ubuntu:18.04
 
 ENV DEBIAN_FRONTEND noninteractive
 
@@ -25,6 +25,5 @@ RUN update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.7 1
 RUN python3.7 -m pip install pip
 RUN python3.7 -m pip install -r requirements.txt 
 RUN python3.7 setup.py install
-RUN python3.7 -m pip install -e .
 CMD /usr/local/bin/wifipumpkin3 -m docker