Improve build script

scripts/build.sh

@@ -1,8 +1,7 @@
 #!/bin/bash
 
 # build processes
-docker build . -f build/Dockerfile-crawler -t trandoshan.io/crawler
-docker build . -f build/Dockerfile-feeder -t trandoshan.io/feeder
-docker build . -f build/Dockerfile-scheduler -t trandoshan.io/scheduler
-docker build . -f build/Dockerfile-persister -t trandoshan.io/persister
-docker build . -f build/Dockerfile-api -t trandoshan.io/api
+for path in build/Dockerfile-*; do
+  name=$(echo "$path" | cut -d'-' -f2)
+  docker build . -f "$path" -t "trandoshan.io/$name"
+done