diff --git a/Dockerfile b/Dockerfile
index 06302b1d..aac69e14 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -33,7 +33,7 @@ RUN chmod 777 /tmp \
 	&& apt-get install -y curl git net-tools iputils-ping ntp ntpdate nginx wget dumb-init cloc
 
 # install python
-RUN apt-get install python3 python3-pip \
+RUN apt-get install -y python3 python3-pip \
 	&& ln -s /usr/bin/pip3 /usr/local/bin/pip \
 	&& ln -s /usr/bin/python3 /usr/local/bin/python
 
diff --git a/Dockerfile.cn b/Dockerfile.cn
index 4c04458f..0449e527 100644
--- a/Dockerfile.cn
+++ b/Dockerfile.cn
@@ -33,7 +33,7 @@ RUN chmod 777 /tmp \
 	&& apt-get install -y curl git net-tools iputils-ping ntp ntpdate nginx wget dumb-init cloc
 
 # install python
-RUN apt-get install python3 python3-pip \
+RUN apt-get install -y python3 python3-pip \
 	&& ln -s /usr/bin/pip3 /usr/local/bin/pip \
 	&& ln -s /usr/bin/python3 /usr/local/bin/python
 
diff --git a/Dockerfile.local b/Dockerfile.local
index d99f5a95..11d60e38 100644
--- a/Dockerfile.local
+++ b/Dockerfile.local
@@ -33,7 +33,7 @@ RUN chmod 777 /tmp \
 	&& apt-get install -y curl git net-tools iputils-ping ntp ntpdate nginx wget dumb-init cloc
 
 # install python
-RUN apt-get install python3 python3-pip \
+RUN apt-get install -y python3 python3-pip \
 	&& ln -s /usr/bin/pip3 /usr/local/bin/pip \
 	&& ln -s /usr/bin/python3 /usr/local/bin/python