diff --git a/samples/containers/replication/db1/Dockerfile b/samples/containers/replication/db1/Dockerfile
index 84fe284e..e3b32a82 100644
--- a/samples/containers/replication/db1/Dockerfile
+++ b/samples/containers/replication/db1/Dockerfile
@@ -1,6 +1,5 @@
-FROM mcr.microsoft.com/mssql/server:2019-CTP3.0-ubuntu
-
-COPY . /
-
-RUN chmod +x /db-init.sh
+FROM mcr.microsoft.com/mssql/rhel/server:2019-CTP3.1
+COPY . /
+
+RUN chmod +x /db-init.sh
 CMD /bin/bash ./entrypoint.sh
\ No newline at end of file
diff --git a/samples/containers/replication/db1/db-init.sh b/samples/containers/replication/db1/db-init.sh
index aa83da97..be17defd 100644
--- a/samples/containers/replication/db1/db-init.sh
+++ b/samples/containers/replication/db1/db-init.sh
@@ -5,7 +5,6 @@ mkdir /var/opt/mssql/ReplData/
 chown mssql /var/opt/mssql/ReplData/
 chgrp mssql /var/opt/mssql/ReplData/
 
-
 echo "running set up script"
 #run the setup script to create the DB and the schema in the DB
-/opt/mssql-tools/bin/sqlcmd -S localhost -U sa -P MssqlPass123 -d master -i db-init.sql
\ No newline at end of file
+/opt/mssql-tools/bin/sqlcmd -S localhost -U sa -P MssqlPass123 -d master -i db-init.sql
diff --git a/samples/containers/replication/db1/entrypoint.sh b/samples/containers/replication/db1/entrypoint.sh
index 4a6e4fe6..7e96fe1f 100644
--- a/samples/containers/replication/db1/entrypoint.sh
+++ b/samples/containers/replication/db1/entrypoint.sh
@@ -2,4 +2,5 @@
 #You need a non-terminating process to keep the container alive. 
 #In a series of commands separated by single ampersands the commands to the left of the right-most ampersand are run in the background. 
 #So - if you are executing a series of commands simultaneously using single ampersands, the command at the right-most position needs to be non-terminating
- /db-init.sh & /opt/mssql/bin/sqlservr
\ No newline at end of file
+ /db-init.sh & /opt/mssql/bin/sqlservr
+ 
\ No newline at end of file
diff --git a/samples/containers/replication/db2/Dockerfile b/samples/containers/replication/db2/Dockerfile
index 84fe284e..778ca3d9 100644
--- a/samples/containers/replication/db2/Dockerfile
+++ b/samples/containers/replication/db2/Dockerfile
@@ -1,6 +1,6 @@
-FROM mcr.microsoft.com/mssql/server:2019-CTP3.0-ubuntu
-
-COPY . /
-
-RUN chmod +x /db-init.sh
+FROM mcr.microsoft.com/mssql/rhel/server:2019-CTP3.1
+
+COPY . /
+
+RUN chmod +x /db-init.sh
 CMD /bin/bash ./entrypoint.sh
\ No newline at end of file
diff --git a/samples/containers/replication/db2/db-init.sh b/samples/containers/replication/db2/db-init.sh
index eed9da31..35e86c6f 100644
--- a/samples/containers/replication/db2/db-init.sh
+++ b/samples/containers/replication/db2/db-init.sh
@@ -3,4 +3,4 @@ sleep 20s
 
 echo "running set up script"
 #run the setup script to create the DB and the schema in the DB
-/opt/mssql-tools/bin/sqlcmd -S localhost -U sa -P MssqlPass123 -d master -i db-init.sql
\ No newline at end of file
+/opt/mssql-tools/bin/sqlcmd -S localhost -U sa -P MssqlPass123 -d master -i db-init.sql