diff --git a/README.md b/README.md
index 4c71eedd..b4062169 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,24 @@
-# docker-compose-files
+Docker Compose Files
+===
 Some typical docker compose templates.
+
+# Install Docker Compose
+```sh
+$ sudo pip install docker-compose
+```
+
+# Docker-compose Usage
+See [https://docs.docker.com/compose/](https://docs.docker.com/compose/).
+
+
+# templates
+
+## mongo_cluster
+Start 3 mongo instance to make a replica set.
+
+## mongo_webui
+Start 1 mongo instance and a mongo-express web tool to watch it.
+
+The mongo instance will store data into local /opt/data/mongo_home.
+
+The web UI will listen on local 8081 port.
diff --git a/mongo_cluster/docker-compose.yml b/mongo_cluster/docker-compose.yml
new file mode 100644
index 00000000..24993abd
--- /dev/null
+++ b/mongo_cluster/docker-compose.yml
@@ -0,0 +1,43 @@
+# This will boot 4 containers: 3 mongo as a cluster, and 1 to issue mongo commands to others
+#
+
+mongo3:
+  image: mongo:3.0
+  hostname: mongo3
+  expose:
+    - "27017"
+    - "28017"
+  restart: always
+  entrypoint: [ "/usr/bin/mongod", "--replSet", "rs", "--rest", "--httpinterface" ]
+
+mongo2:
+  image: mongo:3.0
+  hostname: mongo2
+  expose:
+    - "27017"
+    - "28017"
+  restart: always
+  entrypoint: [ "/usr/bin/mongod", "--replSet", "rs", "--rest", "--httpinterface" ]
+
+mongo1:
+  image: mongo:3.0
+  hostname: mongo1
+  expose:
+    - "27017"
+    - "28017"
+  links:
+    - mongo2:mongo2
+    - mongo3:mongo3
+  restart: always
+  entrypoint: [ "/usr/bin/mongod", "--replSet", "rs", "--rest", "--httpinterface" ]
+
+mongosetup:
+  image: mongo:3.0
+  links:
+    - mongo1:mongo1
+    - mongo2:mongo2
+    - mongo3:mongo3
+  volumes:
+    - ./scripts:/scripts
+  restart: always
+  entrypoint: [ "bash", "/scripts/mongosetup.sh" ]
diff --git a/mongo_cluster/scripts/mongosetup.sh b/mongo_cluster/scripts/mongosetup.sh
new file mode 100644
index 00000000..fa67b4ff
--- /dev/null
+++ b/mongo_cluster/scripts/mongosetup.sh
@@ -0,0 +1,46 @@
+#!/bin/bash
+
+MONGODB1=`ping -c 1 mongo1 | head -1  | cut -d "(" -f 2 | cut -d ")" -f 1`
+MONGODB2=`ping -c 1 mongo2 | head -1  | cut -d "(" -f 2 | cut -d ")" -f 1`
+MONGODB3=`ping -c 1 mongo3 | head -1  | cut -d "(" -f 2 | cut -d ")" -f 1`
+
+echo "Waiting for startup.."
+until curl http://${MONGODB1}:28017/serverStatus\?text\=1 2>&1 | grep uptime | head -1; do
+  printf '.'
+  sleep 1
+done
+
+echo curl http://${MONGODB1}:28017/serverStatus\?text\=1 2>&1 | grep uptime | head -1
+echo "Started.."
+
+sleep 10
+
+echo SETUP.sh time now: `date +"%T" `
+mongo --host ${MONGODB1}:27017 <<EOF
+   var cfg = {
+        "_id": "rs",
+        "version": 1,
+        "members": [
+            {
+                "_id": 0,
+                "host": "${MONGODB1}:27017",
+                "priority": 2
+            },
+            {
+                "_id": 1,
+                "host": "${MONGODB2}:27017",
+                "priority": 0
+            },
+            {
+                "_id": 2,
+                "host": "${MONGODB3}:27017",
+                "priority": 0
+            }
+        ]
+    };
+    rs.initiate(cfg, { force: true });
+    rs.reconfig(cfg, { force: true });
+    db.getMongo().setReadPref('nearest');
+EOF
+
+ping 127.0.0.1 > /dev/null
diff --git a/mongo_webui/.docker-compose.yml.swp b/mongo_webui/.docker-compose.yml.swp
new file mode 100644
index 00000000..1a9a6c0a
Binary files /dev/null and b/mongo_webui/.docker-compose.yml.swp differ
diff --git a/mongo_webui/docker-compose.yml b/mongo_webui/docker-compose.yml
new file mode 100644
index 00000000..cd9727cb
--- /dev/null
+++ b/mongo_webui/docker-compose.yml
@@ -0,0 +1,28 @@
+# This compose file will start 2 containers: mongo and mongo-express. Run: sudo docker-compose up
+# mongo: a nosql db, store data in local /opt/data/mongo_home/
+# mongo-express: web UI for mongo listening on 8081. See https://github.com/yeasy/mongo-express
+
+
+mongo:
+    image: mongo:3.0
+    hostname: mongo
+    expose:
+        - "27017"
+    volumes:
+        - /opt/data/mongo_home:/data/db
+    restart: always
+    mem_limit: 1024m
+
+mongoexpress:
+    image: yeasy/mongo-express
+    hostname: mongo-express
+    links:
+        - mongo:mongo
+    ports:
+        - "8081:8081"
+    restart: always
+    mem_limit: 128m
+    environment:
+        - WEB_USER='user'
+        - WEB_PASS='pass'
+    command: sh -c 'sleep 10 && tini -- node app'