diff --git a/Dockerfile b/Dockerfile
index 6ba1a5f..30b318c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -109,7 +109,9 @@ RUN echo "export HADOOP_COMMON_HOME=/usr/local/hadoop" >> /usr/local/sqoop/conf/
 RUN echo "export HADOOP_MAPRED_HOME=/usr/local/hadoop" >> /usr/local/sqoop/conf/sqoop-env.sh
 
 # Install PostgreSQL
-RUN apt-get install -y postgresql
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt-get update && \
+    apt-get install -y postgresql
 RUN wget https://jdbc.postgresql.org/download/postgresql-42.7.1.jar
 RUN mv postgresql-42.7.1.jar /usr/local/sqoop/lib/
 
diff --git a/README.md b/README.md
index e599866..ad5a5cb 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ docker build -t hadoop .
 
 6. Create a new container using the newly created image
 ```bash
-docker run -it -p 9870:9870 --name anyname hadoop bash
+docker run -it -p 9870:9870 -p 8088:8088 -p 9864:9864 --name anyname hadoop bash
 ```
 <br>
 
@@ -53,4 +53,4 @@ docker exec -it anyname bash
 Once in, execute:
 ```bash
 restart
-```
\ No newline at end of file
+```