fix: sync start script

Author: elcharitas

start.sh

@@ -1,10 +1,8 @@
 # run env setup script
-sh ./set_env.sh;
+sh ./set_env.sh && \
 # Make sure the Docker services are running in your local machine
-# Remove unused and dangling images
-docker image prune --all
 # Run this command from the directory where you have the "docker-compose-build.yml" file present
-docker-compose -f docker-compose-build.yml build --parallel
+docker-compose -f docker-compose-build.yml build --parallel && \
 
 # Run this command from the directory where you have the "docker-compose.yml" file present
-docker-compose up
+docker-compose up;