use spaces to indent

Dockerfile

@@ -2,9 +2,9 @@ FROM sameersbn/ubuntu:12.04.20140818
 MAINTAINER sameer@damagehead.com
 
 RUN apt-get update && \
-		apt-get install -y --no-install-recommends postgresql postgresql-client && \
-		rm -rf /var/lib/postgresql &&  \
-		rm -rf /var/lib/apt/lists/* # 20140818
+    apt-get install -y --no-install-recommends postgresql postgresql-client && \
+    rm -rf /var/lib/postgresql &&  \
+    rm -rf /var/lib/apt/lists/* # 20140818
 
 ADD start /start
 RUN chmod 755 /start

start

@@ -20,26 +20,26 @@ EOF
 
 # initialize PostgreSQL data directory
 if [ ! -d /var/lib/postgresql/9.1/main ]; then
-	echo "Initializing database..."
-	PG_PASSWORD=$(pwgen -c -n -1 14)
-	echo "${PG_PASSWORD}" > /var/lib/postgresql/pwfile
-	sudo -u postgres -H /usr/lib/postgresql/9.1/bin/initdb \
-		--pgdata=/var/lib/postgresql/9.1/main --pwfile=/var/lib/postgresql/pwfile \
-		--username=postgres --encoding=unicode --auth=trust >/dev/null
+  echo "Initializing database..."
+  PG_PASSWORD=$(pwgen -c -n -1 14)
+  echo "${PG_PASSWORD}" > /var/lib/postgresql/pwfile
+  sudo -u postgres -H /usr/lib/postgresql/9.1/bin/initdb \
+    --pgdata=/var/lib/postgresql/9.1/main --pwfile=/var/lib/postgresql/pwfile \
+    --username=postgres --encoding=unicode --auth=trust >/dev/null
 fi
 
 if [ -f /var/lib/postgresql/pwfile ]; then
-	PG_PASSWORD=$(cat /var/lib/postgresql/pwfile)
-	echo "|------------------------------------------------------------------|"
-	echo "| PostgreSQL User: postgres, Password: ${PG_PASSWORD}              |"
-	echo "|                                                                  |"
-	echo "| To remove the PostgreSQL login credentials from the logs, please |"
-	echo "| make a note of password and then delete the file pwfile          |"
-	echo "| from the data store.                                             |"
-	echo "|------------------------------------------------------------------|"
+  PG_PASSWORD=$(cat /var/lib/postgresql/pwfile)
+  echo "|------------------------------------------------------------------|"
+  echo "| PostgreSQL User: postgres, Password: ${PG_PASSWORD}              |"
+  echo "|                                                                  |"
+  echo "| To remove the PostgreSQL login credentials from the logs, please |"
+  echo "| make a note of password and then delete the file pwfile          |"
+  echo "| from the data store.                                             |"
+  echo "|------------------------------------------------------------------|"
 fi
 
 echo "Starting PostgreSQL server..."
 exec sudo -u postgres -H /usr/lib/postgresql/9.1/bin/postgres \
-	-D /var/lib/postgresql/9.1/main \
-	-c config_file=/etc/postgresql/9.1/main/postgresql.conf
+  -D /var/lib/postgresql/9.1/main \
+  -c config_file=/etc/postgresql/9.1/main/postgresql.conf