Docker with Express and Mongodb

> git clone https://github.com/jwill9999/docker_express_mongodb.git 
> cd docker_express_mongodb
> npm install
> npm start port 3000

Instructions

Dockerfile and Docker-compose.yml file included

Ensure docker is installed for your operating system link

Within the Dockerfile included ensure the following details match your requirements

FROM node:7-alpine 
MAINTAINER $YOUR_NAME, $YOUR_EMAIL
RUN mkdir -p /src/app
WORKDIR /src/app
COPY package.json /src/app/package.json
RUN npm install
COPY . /src/app
EXPOSE 3000
CMD [ "npm", "start"]

In the docker-compose.yml file check the details and file mapping are to your requirments mainly refering to the volume mapping for your host database files to container database files.

version: "2"
services:
  web:
    build: .
    ports:
      - "3000:3000"
    links:
      - mongo
  mongo:
    image: mongo
    volumes:
      - /data/mongodb/db:/data/db
    ports:
      - "27017:27017"

In the command line navigate to your codes directory. Then in the command line type

docker-compose build

then once downloaded and complete

docker-compose up

The website will load on http://localhost:3000

The express instance and Mongodb container are now connected and the data is also being saved by volume mounting to your host mongo database so persisting data.

To check this connection out perform the following in the command line

** POST DATA **  

curl -X POST -H "Content-type: application/json" http://localhost:3000/data/into/db \
    -d '[ { "name": "jason" }, { "name": "John" }, { "name": "Sarah" } ]'

This should save the data to your container and your local host database for development persistance

Navigate to http://localhost:3000/data/from/db wher you will see your json data returned

Conclusion

This is an example docker container utilizing Express and Mongodb which uses docker-compose and container links behind the scenes. The database can be accessed for this example via curl

GET /data/from/db

POST /data/into/db

**GET DATA **  

curl http://localhost:3000/data/from/db