Articles
Mosquitto
Mosquitto is an open source message broker that implements the MQTT protocol. It is lightweight and is suitable for use on all devices from low power single board computers to full servers.
Using v-for or v-if on multiple elements
Items to which <code>v-if</code> or <code>v-for</code> apply can be grouped inside <code><template></code> tags. For example:
Nextcloud Apache2 configuration
Here is an example configuration file to use Nextcloud with an Apache2 server in Ubuntu. Here, it is assumed that nextcloud install is located in <code>/var/www/</code>
SSH through an SSH blocking proxy
Most corporate networks have their outbound traffic go through a proxy server to prevent unauthorized access to external resources. It can happen that such proxy only allows HTTP and HTTPS traffic. As such, one cannot connect to an external host via SSH. One way to solve this problem is to use <a href="https://github.com/proxytunnel/proxytunnel" rel="noopener noreferrer nofollow">Proxytunnel</a>. This article follows <a href="https://egret.psychol.cam.ac.uk/techniques/firewall.html" rel="noopener noreferrer nofollow">this guide</a>.
NodeJS modules
A JavaScript file can be imported as a module into another file using the <code>require</code> command. For example, he file myPackage.js can be imported as so:
Puppeteer setup for NodeJS
Puppeteer is a headless browser with which NodeJS can interact to automate web pages manipulation.
NodeJS app dockerization
NodeJS apps can be containerized using the <code>docker build</code> command. This article is based on <a href="https://nodejs.org/de/docs/guides/nodejs-docker-webapp/" rel="noopener noreferrer nofollow">this guide</a>.
Self hosted Docker registry
When using the <code>docker pull</code> command, container images are by default downloaded from docker hub, the official public registry for container images. However, for some projects, images are better stored on a private platform. This can be achieved by hosting one's own docker registry.
Docker HTTP (insecure) registry
By default Docker refuses to push/pull from registries that are not served using HTTPS.
Docker behind a proxy
Docker does not use environment variables for proxy configuration. This article presents how to configure Docker to use a proxy.