Guides tagged “docker”
Step-by-step MdmHost guides about docker, sorted A-Z.
73 guides · page 4 of 4
Self-host n8n workflow automation with Docker Compose
Run n8n on your own VPS with Docker Compose and PostgreSQL behind HTTPS, set the webhook URL and encryption key correctly, secure access and back up your workflows.
Self-host Nextcloud with Docker Compose, MariaDB and Redis
Run Nextcloud, MariaDB and Redis as containers on one Linux VPS. Build the compose file, set trusted domains and verify the stack end to end.
Self-host Vaultwarden with Docker Compose and HTTPS
Run a Bitwarden-compatible Vaultwarden server in Docker Compose on a Linux VPS, put HTTPS in front of it, lock down signups and set up a backup you can restore.
Set up Traefik as a reverse proxy for Docker containers
Run Traefik with Docker Compose to route domains to containers automatically using labels, get Let's Encrypt certificates, redirect HTTP to HTTPS and protect the dashboard.
Smaller Docker images with multi-stage builds
Use Docker multi-stage builds to separate build tools from the runtime image. Worked examples for Node.js, Go and Python, plus slim base images and layer caching tips.
Stop Docker from bypassing your UFW firewall
Docker-published ports skip UFW rules and stay open to the internet. Learn why it happens, how to bind ports to 127.0.0.1, how to filter with the DOCKER-USER chain and how to test from outside.
Traefik in Docker: automatic SSL and routing by container labels
Run Traefik as a Docker container, get free Let's Encrypt certificates automatically, and route traffic to your apps by adding a few labels to each container.
Troubleshooting container networking issues: bridge vs host mode in Docker
Bridge and host mode move packets in different ways, so the same symptom usually has a different cause. Work through host, container and DNS checks to find the real fault.
Update Docker containers safely (manually or with Watchtower)
How to update Docker containers on a VPS without surprises. Pull and recreate with Compose, pin tags, roll back a bad update, and decide whether automatic updates with Watchtower suit your server.
Update self-hosted containers safely with Watchtower
Watchtower pulls new images and restarts your containers on a schedule. This guide covers monitor-only runs, allowlists, notifications and settings that keep updates reversible.
View and rotate Docker container logs
Read, follow and filter Docker container logs, then set log rotation with max-size and max-file so container logs never fill your VPS disk again.
Write a Dockerfile and build your first image
A step-by-step Dockerfile tutorial. Write FROM, RUN, COPY and CMD instructions for a small web app, add a.dockerignore, build and tag the image on your VPS and test the container.
Zero-downtime deploys with Docker Compose and a reverse proxy
Run blue-green container swaps behind Nginx so every deploy keeps serving traffic. Health checks gate the switch, and a reload moves traffic without dropping connections.
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