diff --git a/docker/Dockerfile b/docker/Dockerfile
index 2d24d04..b4ec526 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,16 +1,16 @@
 FROM continuumio/anaconda3
 
 RUN apt-get update && apt-get upgrade -y \
-	&& apt-get install -y \
-		libpq-dev \
-		build-essential \
-		git \
-		sudo \
-	&& rm -rf /var/lib/apt/lists/*
+    && apt-get install -y \
+        libpq-dev \
+        build-essential \
+        git \
+        sudo \
+    && rm -rf /var/lib/apt/lists/*
 
 RUN conda install -y -c conda-forge \
-		tensorflow \
-		jupyter_contrib_nbextensions
+        tensorflow \
+        jupyter_contrib_nbextensions
 
 ARG username
 ARG userid
@@ -19,8 +19,8 @@ ARG home=/home/${username}
 ARG workdir=${home}/handson-ml
 
 RUN adduser ${username} --uid ${userid} --gecos '' --disabled-password \
-	&& echo "${username} ALL=(root) NOPASSWD:ALL" > /etc/sudoers.d/${username} \
-	&& chmod 0440 /etc/sudoers.d/${username}
+    && echo "${username} ALL=(root) NOPASSWD:ALL" > /etc/sudoers.d/${username} \
+    && chmod 0440 /etc/sudoers.d/${username}
 
 WORKDIR ${workdir}
 RUN chown ${username}:${username} ${workdir}
@@ -57,9 +57,9 @@ COPY docker/nbdime-*.patch /tmp/
 USER root
 WORKDIR /
 RUN patch -d /opt/conda/lib/python3.6/site-packages -p1 --forward --reject-file=- < \
-		/tmp/nbdime-1-details.patch || true \
-	&& patch -d /opt/conda/lib/python3.6/site-packages -p1 --forward --reject-file=- < \
-		/tmp/nbdime-2-toc.patch || true
+        /tmp/nbdime-1-details.patch || true \
+    && patch -d /opt/conda/lib/python3.6/site-packages -p1 --forward --reject-file=- < \
+        /tmp/nbdime-2-toc.patch || true
 RUN rm /tmp/nbdime-*.patch
 USER ${username}
 WORKDIR ${workdir}
@@ -89,5 +89,5 @@ RUN sudo rm /tmp/bashrc.bash
 #          passwd()
 #       and take the hash from the output
 #RUN mkdir -p ${home}/.jupyter && \
-#	echo 'c.NotebookApp.password = u"sha1:c6bbcba2d04b:f969e403db876dcfbe26f47affe41909bd53392e"' \
-#	>> ${home}/.jupyter/jupyter_notebook_config.py
+#    echo 'c.NotebookApp.password = u"sha1:c6bbcba2d04b:f969e403db876dcfbe26f47affe41909bd53392e"' \
+#    >> ${home}/.jupyter/jupyter_notebook_config.py
diff --git a/docker/Makefile b/docker/Makefile
index 6078fc9..f85c49a 100644
--- a/docker/Makefile
+++ b/docker/Makefile
@@ -4,7 +4,7 @@ help:
 run:
 	docker-compose up
 exec:
-	docker-compose exec handson-ml /bin/bash
+	docker-compose exec handson-ml bash
 build: stop .FORCE
 	docker-compose build
 rebuild: stop .FORCE