I recently discovered the dev containers standard (or development containers for long) recently after trying to contribute to a project which had them enabled by default. It seems to be a new standard way to work with containers in development.

The goal is to provide a container you can use …

When you deploy a frontend app, most of the time the name of your assets contains their hash so you can easily cache the files. So instead of just having main.js you will have something like main.1234.js. The problem is that your HTML will reference main.1234 …

Today I am going to explain how you can run multiple docker daemons on the same host. This can be useful if you want several users to use docker and want each of them to be isolated from one another (ie don't see images, containers, … of other users). The solution …

At work in a PHP application, we rely on libsodium to erase a password from $_POST. It may sound like a good idea: once the password is not in memory any more, it can't leak. But the question is: is it really erased from memory? That's the question will answer …

Not long ago, I publish an article about using Unix sockets with docker. These sockets where in docker volumes so they could be shared between various containers. The key idea was to change the …

For my tips about docker, go here.

By default, you are supposed to use TCP sockets to communicate with your applications running in Docker. But what if you want to use Unix sockets instead? The answer is you can: you make the application create the socket file in a volume and set the proper permissions to it …

Recently I had to deploy an application on Glassfish. Since Glassfish is not packaged on the distribution I have on my server (Fedora Server) and I wanted to avoid to pollute my system I decided to use Docker.

In order to deploy my application correctly, I based my Dockerfile on …

For my tips about docker compose, go here.

docker build -t <name> .

docker save <image> > file
docker load < <image>

docker run --name …

If you are running docker 1.3 or above, you should use: docker exec -it CONTAINER COMMAND to run COMMAND within the container. You can easily create a function to ease the thing and run bash by default:

dk-enter() {
    docker exec -it "$1" "${2:-/bin/bash}"
}

Otherwies, you can easily …