I'm using Docker with fig to build NodeJS dev-env.
While I using nodemon to watch the server.js, changing server.js won't restart the server.
CMD ["nodemon", "/nodeapp/server.js"]
But while I changed from nodemon to supervisor, then it worked!
CMD ["supervisor", "/nodeapp/server.js"]
Does anyone know where the problem is?
More informations are below:
My fig folder structure:
app/server.js
package.json
node_modules/
fig.yml
Dockerfile
fig.yml:
nodejs:
build: .
ports:
- "8080:8080"
Dockerfile:
RUN apt-get update --fix-missing
RUN rm /bin/sh && ln -s /bin/bash /bin/sh
# NVM
RUN curl -sL https://deb.nodesource.com/setup | sudo bash - && \
apt-get install -y nodejs
VOLUME ./app:/nodeapp
WORKDIR /nodeapp
RUN rm /bin/sh && ln -s /bin/bash /bin/sh && \
npm install -g nodemon mocha supervisor
CMD ["nodemon", "/nodeapp/server.js"]
Server.js: (sample code from NodeJS website)
var http = require('http');
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello 12\n');
}).listen(8080);
console.log('Server running at http://127.0.0.1:8080/');
有一个特殊选项可以启用 nodemon 的传统监视模式:
nodemon --legacy-watch
This is how I do it:
You will need nodemon version 1.3.0-5 for this ( npm i -g nodemon@dev
)
.dockerignore:
node_modules/*
Dockerfile:
FROM node:0.10
WORKDIR /nodeapp
ADD ./package.json /nodeapp/package.json
RUN npm install --production
ADD ./app /nodeapp/app
EXPOSE 8080
CMD ["node", ".", "--production"]
package.json:
{
"name": "fig-nodemon",
"version": "1.0.0",
"description": "",
"main": "./app/server.js",
"scripts": {
"nodemon": "fig up -d && fig run nodejs npm i --development && nodemon -x \"fig kill nodejs && fig build nodejs && fig start nodejs && fig logs nodejs\""
},
"author": "",
"license": "MIT"
}
fig.yml:
nodejs:
build: .
command: node . --development
volumes:
- ./app:/nodeapp/app
ports:
- "8080:8080"
app/server.js:
var http = require('http');
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello 13\n');
}).listen(8080);
console.log('Server running at http://127.0.0.1:8080/');
then I run npm run nodemon
to get started.
first up - VOLUME ./app:/nodeapp
does not do what you want - you're creating a directory in the image called /app:/nodeapp
- and so at no point is the server.js file getting onto your image.
test using docker run --rm -it yourimagename ls -la
changing your Dockerfile to
FROM ubuntu
RUN apt-get update --fix-missing
RUN apt-get install -yq curl
RUN rm /bin/sh && ln -s /bin/bash /bin/sh
# NVM
RUN curl -sL https://deb.nodesource.com/setup | sudo bash - && \
apt-get install -y nodejs
#VOLUME ./app:/nodeapp
ADD app /nodeapp
WORKDIR /nodeapp
RUN rm /bin/sh && ln -s /bin/bash /bin/sh && \
npm install -g nodemon mocha supervisor
CMD ["nodemon", "/nodeapp/server.js"]
gets me:
mini:nodaemon sven$ docker run --rm -it -p 8080:8080 nodaemon
2 Dec 02:27:52 - [nodemon] v1.2.1
2 Dec 02:27:52 - [nodemon] to restart at any time, enter `rs`
2 Dec 02:27:52 - [nodemon] watching: *.*
2 Dec 02:27:52 - [nodemon] starting `node /nodeapp/server.js`
Server running at http://127.0.0.1:8080/
Assuming you've the project running using a nodemon and struggling with docker-izing it.
Make sure the terminal points inside the project's root folder.
Step 1 : Build docker image
docker build -t docker-image-name .
Step 2: Run image with a volume mount
docker run -it -p 9000:3000 -v $(pwd):/app docker-image-name
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