diff --git a/deploy/db/Dockerfile b/deploy/db/Dockerfile
index e966ab46d..4ae151402 100644
--- a/deploy/db/Dockerfile
+++ b/deploy/db/Dockerfile
@@ -2,5 +2,8 @@ FROM mongo:6.0.9
 
 COPY docker/init.sh /docker-entrypoint-initdb.d/init.sh
 COPY db/createdb.js /home/createdb.js
+COPY docker/entrypoint.sh /scripts/entrypoint.sh
 
-RUN chmod +x /docker-entrypoint-initdb.d/init.sh
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+RUN chmod +x /docker-entrypoint-initdb.d/init.sh
+
+ENTRYPOINT ["sh", "/scripts/entrypoint.sh", "mongo-db"]
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diff --git a/deploy/db/README.md b/deploy/db/README.md
new file mode 100644
index 000000000..469b74bc7
--- /dev/null
+++ b/deploy/db/README.md
@@ -0,0 +1,12 @@
+# MongoDB as a replicaSet
+
+The scripts defined here are used to start a MongoDB instance configured as a replicaSet. The Dockerfile defines the docker image of a mongo replicaSet that will be used in Kubernetes (necessary for the Kubernetes version of BACK).
+
+To build the docker image we need to run the `docker build` command at the `deploy` directory.
+
+```
+# In the deploy directory, build the Docker image
+docker build -f db/Dockerfile -t <tag_name> .
+```
+
+**WARNING:** do not build the image using a machine with ARM architecture (for example all Macs with chip M*) as it will not work in our cluster. 
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