I'm having some problems with building my application through Jenkins and running the container on a extrernal tomcat.
Dockerfile:
FROM node:10.16.3
RUN ls -al
WORKDIR /app
COPY /package/repo/package.json /app/package.json
RUN npm install
COPY /package/repo /app
RUN npm run build
EXPOSE 8080
CMD ["npm", "start]
npm start calls node server.js
server.js:
const express = require('express');
const app = express();
const port = 8080;
app.get('/', (req, res) => {
res.send('Hello World!');
});
app.listen(port, () => {
console.log(`Example app listening on port ${port}!`);
console.log(__dirname+'/client/build/index.html');
});
app.listen(port, () => console.log(`Example app listening on port ${port}!`));
docker build -t reacttest.
docker run reacttest
I'm trying to access the container using localhost:8080, however, whenever I access that port, I'm getting error not found. Is there a step I'm missing. Sorry, i'm very new to docker.
You need to map a port from your machine to the container. Use the p flag for this.
docker run reacttest -p 8080:8080
In general the syntax is:
docker run <image> -p <host port>:<container port>
You can read more in the documentation
EXPOSE
does not accually publish the port. You should run you container with -p
flag to map ports from container to your host system. See the documents .
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