Minor improvements to docker compose, README

Minor improvements, updated documentation, added Cassandra as a container

Change-Id: If30d2fc5612625c67a4d1c4d30826a38038cee58
Issue-ID: SDC-1743
Signed-off-by: vempo <vitaliy.emporopulo@amdocs.com>
diff --git a/docker-compose/debug.yml b/docker-compose/debug.yml
new file mode 100644
index 0000000..de0873f
--- /dev/null
+++ b/docker-compose/debug.yml
@@ -0,0 +1,17 @@
+version: '3'
+services:
+
+  # Added debug configurations - exposing port and added required JAVA_OPTIONS for debug
+  # for both backend and frontend
+
+  workflow-backend:
+    ports:
+    - "${BACKEND_DEBUG_PORT}:${BACKEND_DEBUG_PORT}"
+    environment:
+    - JAVA_OPTIONS=${JAVA_OPTIONS} -Xdebug -agentlib:jdwp=transport=dt_socket,address=${BACKEND_DEBUG_PORT},server=y,suspend=n
+
+  workflow-frontend:
+    ports:
+    - "${FRONTEND_DEBUG_PORT}:${FRONTEND_DEBUG_PORT}"
+    environment:
+    - JAVA_OPTIONS=${JAVA_OPTIONS} -Xdebug -agentlib:jdwp=transport=dt_socket,address=${FRONTEND_DEBUG_PORT},server=y,suspend=n
\ No newline at end of file