add information and png with diagram

Dockerfile

@@ -2,6 +2,7 @@
 FROM python:3.11
 
 COPY src /app/src
+COPY graphics /app/graphics
 COPY requirements.txt /app/src
 
 # set the working directory in the container

src/start_app.py

@@ -38,6 +38,17 @@ FOOTER = f"""
             {APP_NAME} - v{APP_VERSION} - by <a href="https://www.bit-buddy.at" target="_blank">BitBuddySolutions</a>
         </div>
         """
+
+DESCRIPTION_MARKDOWN = """
+This app is designed to help estimate the complexity of a service request system to avoid problems within your IT department.
+
+The estimator is based on the following assumptions:
+- If the number of servicedesk employess is not sufficient, the number of open service requests will increase.
+- If new employees are added or new applications are introduced, the number of open service requests will increase.
+- If the documentation level is low, the number of open service requests will increase.
+- If the knowledge level of the service desk employees is low, the required time to process a service request will increase.
+- If the service desk employees have available time, they will increase the documentation level.
+"""
 # --------------------------------------- #
 #              global vars                #
 # --------------------------------------- #
@@ -78,8 +89,16 @@ if __name__ == "__main__":
     setup_logging()
     st.header("Service Request Complexity Estimator")
 
-    st.write("This app is designed to help estimate the complexity of a service request system to avoid problems "
-             "within your IT department.")
+    base_col1, base_col2 = st.columns([1, 1])
+
+    base_col1.markdown(DESCRIPTION_MARKDOWN)
+
+    base_col2.write("The estimator is based on the following diagram")
+
+    base_col2.image("../graphics/kausaldiagramm.png", caption="Causal Diagram")
+
+    st.divider()
+    st.subheader("Estimator")
 
     form = st.form(key='complex_form')
     col1, col2, col3, col4 = form.columns(4)