Docker Compose

Running multiple services on a single virtual machine (VM) can quickly become a logistical challenge, particularly when it comes to managing access and ensuring security. A reverse proxy, therefore, becomes a central piece of infrastructure. Traefik stands out among the options, offering native Docker integration, automatic HTTPS using Let’s Encrypt, dynamic routing via labels, and minimal manual configuration. But while Traefik boasts many advantages, achieving a clean, production-ready setup requires more than a simple “it works” configuration. This article will walk through structuring a robust Traefik setup on a VM, highlight key configuration choices, and delve into a subtle trap involving basic authentication and Docker Compose that could easily trip you up. ...

The Problem I’m building a container management tool using the Docker Compose SDK (link) and the Docker CLI library (link). One feature is the ability to deploy Docker Compose YAML files that reference images from private registries. To handle authentication, I added private registry credentials into my tool and injected them into the Docker client using the authConfig field during Compose service initialization. I expected Docker Compose to use these credentials when pulling images. ...

If you’ve ever worked with Docker Compose and encountered a situation where your container suddenly can’t see any files in a previously working mounted folder, you’re not alone. This issue can be especially frustrating when everything seems to work fine on the initial deployment, only to break inexplicably after redeploy. The Problem When a folder is bind-mounted into a Docker container using Docker Compose, it works correctly during the initial deployment. However, after a redeploy — particularly when triggered by automation tools like Portainer — the mounted folder inside the container becomes empty. ...

This post will show how to host a OpenLDAP service on the localhost step by step. 1. Prerequisites docker-compose installed. 2. Prepare LDAP data We will create some data for LDAP service and populate it when the service runs up. Create a directory, for example openldap, first, and create another sub-directory openldap/data. The structure of the LDAP data can be described by .ldif file. So we can create below file openldap/data/bootstrap.ldif as the LDAP boostrap data. ...