On my Windows machine, I am attempting to build a containerized node.js application with the following Dockerfile:
# use latest version of nodejs
FROM node:lts-alpine
# install aurelia-cli to build the app & http-server to serve static contents
RUN npm i -g http-server
RUN npm i -g aurelia-cli
# set working directory to app
# henceforth all commands will run inside this folder
WORKDIR /app
# copy package.json related files first and install all required dependencies
COPY package*.json ./
RUN npm install
# copy the rest of the files and folders & install dependencies
COPY . ./
RUN npm run build
# by default http-server will serve contents on port 8080
# so we expose this port to host machine
EXPOSE 8080
CMD [ "http-server" , "dist" ]
However, docker build . fails at the line Copy . ./. with the message cannot replace to directory /var/lib/docker/overlay2/if2ip5okvavl8u6jpdtpczuog/merged/app/node_modules/#ampproject/remapping with file.
What do I need to do to get my container image to build?
Add node_modules to a .dockerignore file in the same directory as your Dockerfile, as outlined here: (h/t David Maze).
Less gracefully, simply delete the project's node_modules directory then rerun docker build.
I am newbie on Kubernetes. I have this dockerfile and deployed on kubernetes but it crash every 50s. What is wrong am I doing ?
FROM node:16-alpine3.14
RUN apk add dumb-init
# Create app directory
WORKDIR /usr/src/app
# Install app dependencies
# A wildcard is used to ensure both package.json AND package-lock.json are copied
# where available (npm#5+)
COPY package*.json ./
RUN npm install
# If you are building your code for production
# RUN npm ci --only=production
# Bundle app source
COPY --chown=node:node . .
RUN npm ci --only=production
USER node
EXPOSE 4000
CMD [ "dumb-init", "node", "server.js" ]
My Angular app runs fine locally but I haven't figured out how to do the same with a Docker image. Outside of Docker, the UI runs on port 4200 with ng serve and the API serves data from 8080 with node server.js.
My Dockerfile is set up so it can get the Node server running and available on 8080, but the Angular UI won't run. I've tried several options but right now I have:
FROM node:14.17.3
COPY package*.json ./
EXPOSE 4200 8080
RUN npm install -g #angular/cli
RUN npm install --only=production
COPY . ./
RUN ng serve
CMD ["node", "server.js"]
It fails on ng serve with the error: The serve command requires to be run in an Angular project, but a project definition could not be found. I do have an angular.json file in the root. I'm not sure what I am missing. I read that ng serve shouldn't be used in this situation but the alternatives I've seen haven't made a difference.
Workspace:
EDIT 8/10/21: Based on the answers here and a bunch of research, this will display the UI with nginx:
FROM node:12.16.1-alpine as build
WORKDIR /usr/src/app
COPY package*.json ./
RUN npm ci --only=production
COPY . .
# RUN npm install -g #angular/cli
# RUN npm run build --prod
FROM nginx:1.15.8-alpine
COPY --from=build /usr/src/app/dist /usr/share/nginx/html
# CMD ["node", "server.js"]
However, the npm run build step fails because ng is not found despite installing #angular/cli. I have to run this manually to build the dist folder. And I can't run node server.js alongside this. It seems I can only get the front end or back end, not both.
Use below command at the end to run ng serve with host 0.0.0.0 which means it listens to all interfaces.
CMD ["ng","serve","--host", "0.0.0.0"]
But I would suggest using ngInx.
Steps to follow:
Create a docker file under the root of your project, and add the below code. It takes care of: downloading dependencies, building angular project, and deploy it to ngInx server.
#Download Node Alpine image
FROM node:12.16.1-alpine As build
#Setup the working directory
WORKDIR /usr/src/ng-app
#Copy package.json
COPY package.json package-lock.json ./
#Install dependencies
RUN npm install
#Copy other files and folder to working directory
COPY . .
#Build Angular application in PROD mode
RUN npm run build
#Download NGINX Image
FROM nginx:1.15.8-alpine
#Copy built angular files to NGINX HTML folder
COPY --from=build /usr/src/ng-app/dist/pokemon-app/ /usr/share/nginx/html
Build docker image:
docker build -t my-ng-app .
Spinning the docker container with below command expose your app at port 80
docker run -dp 3000:80 my-ng-app
Check out my article on this - https://askudhay.com/how-to-dockerize-an-angular-application, and please let me know if you still have any questions.
I figured out a solution that will run the full application. Most answers here focus on running the front end (the nginx suggestion was helpful). It seemed a Docker container could enable the UI or server but not both. I came across Docker Compose, which will run the front and back ends in separate images. My solution:
Dockerfile.ui
# Define node version
FROM node:12.16.1-alpine as build
# Define container directory
WORKDIR /usr/src/app
# Copy package*.json for npm install
COPY package*.json ./
# Run npm clean install, including dev dependencies for #angular-devkit
RUN npm ci
# Run npm install #angular/cli
RUN npm install -g #angular/cli
# Copy all files
COPY . .
# Run ng build through npm to create dist folder
RUN npm run build --prod
# Define nginx for front-end server
FROM nginx:1.15.8-alpine
# Copy dist from ng build to nginx html folder
COPY --from=build /usr/src/app/dist /usr/share/nginx/html
Dockerfile.server
# Define node version
FROM node:12.16.1-alpine
# Define container directory
WORKDIR /usr/src/app
# Copy package*.json for npm install
COPY package*.json ./
# Run npm clean install, prod dependencies only
RUN npm ci --only=production
# Copy all files
COPY . .
# Expose port 8080 for server
EXPOSE 8080
# Run "node server/run.js"
CMD ["node", "server/run.js"]
docker-compose.yml
version: '3'
services:
server:
build:
context: ./
dockerfile: Dockerfile.server
container_name: server
ports:
- 8080:8080
ui:
build:
context: ./
dockerfile: Dockerfile.ui
container_name: ui
ports:
- 4200:80
links:
- server
docker-compose up will build out an image for server and UI and deploy concurrently. I also resolved the ng not found errors by installing dev dependencies, particularly #angular-devkit/build-angular.
This tutorial helped me figure out Docker Compose: https://wkrzywiec.medium.com/how-to-run-database-backend-and-frontend-in-a-single-click-with-docker-compose-4bcda66f6de
I think updating this line
COPY . ./
with
COPY . ./app
should solve that error. It appears that the node "volume" is in that folder.
Otherwise setting the workdir also seems like a solution:
FROM node:14
WORKDIR /usr/src/app
COPY package*.json ./
...
Source: https://nodejs.org/en/docs/guides/nodejs-docker-webapp/
I used a docker file to execute package.json file but it stops at
GithubDatasetAPI#0.0.0 start /usr/src/app node ./bin/www
and doesn't go further or doesn't display error message.I updated to "\node ./bin/www" but doesn't work for me
Here is my DOCKERFILE
FROM node:8
# Create app directory
WORKDIR /usr/src/app
# Install app dependencies
# A wildcard is used to ensure both package.json AND package-lock.json are copied
# where available (npm#5+)
COPY package*.json ./
RUN npm install
# If you are building your code for production
# RUN npm install --only=production
# Bundle app source
COPY . .
EXPOSE 8082
CMD [ "npm", "start" ]
try to copy all the files not just package.json
COPY ./ ./
instead of
COPY package*.json ./
I have a simple node app with the following Dockerfile:
FROM node:8-alpine
WORKDIR /home/my-app
COPY package.json .
COPY ./app ./app
COPY ./server.js ./
RUN rm -rf node_modules
RUN npm install \
npm run build
EXPOSE 3000
When I build the image with: docker build -t my-app:latest ., I attempt to run the app and it complains that some modules are missing.
When I go into the container via docker run -i -t my-app:latest /bin/sh I can see that the packages have not been installed. After manually running npm install in the container, it seems to work.
I can only conclude that from this RUN npm install not being executed correctly inside the container.