docker Cannot find module 'Sequelize' - node.js

Question

Getting below error after deploying docker image:
Cannot find module 'Sequelize'
Directory structure:
src
views
Dockerfile
package.json
Dockerfile:
FROM node:8
ENV PORT 3000
EXPOSE 3000
RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app
COPY package.json /usr/src/app
RUN npm install
COPY . /usr/src/app
CMD ["npm", "run", "prod"]
Package.json:
{
"name": "api",
"version": "0.0.0",
"private": true,
"main": "src/loader.js",
"scripts": {
"dev": "nodemon",
"prod": "node src/loader.js"
},
"dependencies": {
"sequelize": "^4.38.0",
"cookie-parser": "~1.4.3",
"cors": "^2.8.4",
"debug": "~2.6.9",
"express": "~4.16.0",
"express-graphql": "^0.6.12",
"graphql": "^0.13.2",
"graphql-relay": "^0.5.5",
"graphql-sequelize": "^9.0.1",
"http-errors": "~1.6.2",
"jade": "^1.11.0",
"morgan": "~1.9.0",
"mysql2": "^1.6.1"
},
"devDependencies": {
"nodemon": "^1.18.3"
}
}

Answer 1

Could it be a typo, ie can you verify that you are using require('sequelize') instead of require('Sequelize').

Answer 2

Maybe you need to explicitly add the module in your package.json
$ npm install --save sequelize
If the module is declared, it will be found by the dependent module that is causing you that error.
Hope it helps!