Examples of working Dockerfiles.
These Dockerfiles have been used for Node JS apps, so be mindful when adjusting them for different languages.
Warning
The files in this folder have distinct names for easier referencing so make sure that your file is simply named Dockerfile without any additions.
Note
Note that the examples expose port 8080, as my apps tend to have a web interface and listen to that port.
Remove the line EXPOSE 8080 if irrelevant.
The file I use for most apps, for example:
- Express JS web apps
- Discord bots
- REST APIs
One of my projects used puppeteer-html-pdf, for the app to work in production it needed access to chromium and other Puppeteer's requirements to be installed in a specific order, so this is an adjusted file that worked for me.
Note
This Dockerfile includes a broader set of dependencies, which you can adjust based on your specific Puppeteer needs.
Additionally, my project had a file at the root of my project called .puppeteerrc.cjs, containing the following code:
const {join} = require('path');
/**
* @type {import("puppeteer").Configuration}
*/
module.exports = {
// Changes the cache location for Puppeteer.
cacheDirectory: join(__dirname, '.cache', 'puppeteer'),
};
Usually a .dockerignore file will have the same content as your .gitignore file, so for Node JS the following tends to be enough:
.env
node_modules/
Feel free to check out the .dockerignore files documentation.