r/docker

Community Overview
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About r/docker

Docker is an open-source project to easily create lightweight, portable, self-sufficient containers from any application. The same container that a developer builds and tests on a laptop can run at scale, in production, on VMs, bare metal, OpenStack clusters, public clouds and more.

The community at a glance

r/docker is a Subreddit for Self-Hosters with roughly 323K members. It uses a forum format for communication. It also includes courses or structured learning. It is the 5th largest community in the Self-Hosting topic page.

Roughly 36K members have joined in the past year. Popular discussion topics include Docker, Docker Container, and Container. Common discussion themes are Solution Requests and Ideas. Product recommendations often mention iptv and docker tutorial.

On Reddit
323K Members

Community Topics

Community Features

Forum

This community has a forum

Courses

This community offers educational courses

Subreddit Analysis

via GummySearch
Yearly: +36K members
Growth: +12.7% / year

Member growth over time

All time (yearly)

  • 2014: 3K members
  • 2015: 4K members
  • 2016: 6K members
  • 2017: 10K members
  • 2018: 26K members
  • 2019: 30K members
  • 2020: 41K members
  • 2021: 26K members
  • 2023: 40K members
  • 2024: 34K members
  • 2025: 77K members
  • 2026: 27K members

Past year (monthly)

  • Nov: 4K members
  • Dec: 3K members
  • Jan: 4K members
  • Feb: 3K members
  • Mar: 3K members
  • Apr: 3K members
  • May: 3K members
  • Jun: 3K members
  • Jul: 3K members
  • Aug: 3K members
  • Sep: 2K members

Themes

  • Solution Requests
    13 posts in the past month
    1. Best way to backup Docker volumes without stopping containers?
    2. "Virtualization support not detected" on a machine where virtualization is enabled
    3. LogDeck: self-hosted control plane for Docker. Persistent logs, container management, alerts. One Go binary
    #1
    Solution Requests
    Best way to backup Docker volumes without stopping containers? · "Virtualization support not detected" on a machine where virtualization is enabled · LogDeck: self-hosted control plane for Docker. Persistent logs, container management, alerts. One Go binary
    13
  • Ideas
    8 posts in the past month
    1. How I trimmed Postiz from 6 to 4 containers: Dropped ElasticSearch, unified Postgres, and saved 1GB+ RAM (Zero-ES & Clean Temporal Guide)
    2. Homedex: a read-only inventory of what runs where on my home server (Docker, SSH hosts, Traefik/Caddy/NPM/nginx, Tailscale), MIT
    3. Review enhancements to containers
    #2
    Ideas
    How I trimmed Postiz from 6 to 4 containers: Dropped ElasticSearch, unified Postgres, and saved 1GB+ RAM (Zero-ES & Clean Temporal Guide) · Homedex: a read-only inventory of what runs where on my home server (Docker, SSH hosts, Traefik/Caddy/NPM/nginx, Tailscale), MIT · Review enhancements to containers
    8
  • Advice Requests
    2 posts in the past month
    1. General advice: Delaying dockerizing in production app development?
    2. Master Docker Foundamental From Beginner to Advance - LIVE session
    #3
    Advice Requests
    General advice: Delaying dockerizing in production app development? · Master Docker Foundamental From Beginner to Advance - LIVE session
    2
  • Self-Promotion
    1 post in the past month
    1. We built a self-hosted deploy platform where you never have to open a terminal.
    #4
    Self-Promotion
    We built a self-hosted deploy platform where you never have to open a terminal.
    1
  • Pain & Anger
    1 post in the past month
    1. Rage-quit docker ps after the 100th time it truncated my container names — built a proper TUI replacement instead
    #5
    Pain & Anger
    Rage-quit docker ps after the 100th time it truncated my container names — built a proper TUI replacement instead
    1

Topics

  • Docker
    54 posts in the past month
    1. Docker Swarm in production: Are databases a complete No-Go, or am I doing it wrong?
    2. Best way to backup Docker volumes without stopping containers?
    3. Has anyone taken the certification: Containers with Docker (SC109)
    #1
    Docker
    Docker Swarm in production: Are databases a complete No-Go, or am I doing it wrong? · Best way to backup Docker volumes without stopping containers? · Has anyone taken the certification: Containers with Docker (SC109)
    54
  • Docker Container
    16 posts in the past month
    1. Trouble with MakeMKV inside of a docker container (Automatic Ripping Machine specifically)
    #2
    Docker Container
    Trouble with MakeMKV inside of a docker container (Automatic Ripping Machine specifically)
    16
  • Container
    8 posts in the past month
    1. Best way to backup Docker volumes without stopping containers?
    2. LogDeck: self-hosted control plane for Docker. Persistent logs, container management, alerts. One Go binary
    3. Docker Swarm manager came back from a reboot with zero containers while services were healthy elsewhere
    #3
    Container
    Best way to backup Docker volumes without stopping containers? · LogDeck: self-hosted control plane for Docker. Persistent logs, container management, alerts. One Go binary · Docker Swarm manager came back from a reboot with zero containers while services were healthy elsewhere
    8
  • Docker Network
    3 posts in the past month
    1. How to properly decide between Bridge or Host network mode?
    2. How far should a Docker-based learning lab go in enforcing per-service network policy?
    3. What would cause containers to stop getting resolve.conf from host system on reboot?
    #4
    Docker Network
    How to properly decide between Bridge or Host network mode? · How far should a Docker-based learning lab go in enforcing per-service network policy? · What would cause containers to stop getting resolve.conf from host system on reboot?
    3
  • Database
    2 posts in the past month
    #5
    Database
    2

Flair

  • Mod Approved
    2 posts in the past month
    1. If you use Dive, you might want to try LayerX
    2. Building a local-first DIY web app deployment CLI and Docker templates
    #1
    Mod Approved
    If you use Dive, you might want to try LayerX · Building a local-first DIY web app deployment CLI and Docker templates
    2
  • Approved
    1 post in the past month
    1. How far should a Docker-based learning lab go in enforcing per-service network policy?
    #2
    Approved
    How far should a Docker-based learning lab go in enforcing per-service network policy?
    1

Product recommendations

  • iptv
    9 posts in the past month
    1. I Finally Found the Best IPTV Service That Truly Delivers After Endless Searching! Top Choice (Honest Review)
    2. Best IPTV Canada Reddit
    3. Best IPTV Canada Reddit
    #1
    iptv
    I Finally Found the Best IPTV Service That Truly Delivers After Endless Searching! Top Choice (Honest Review) · Best IPTV Canada Reddit · Best IPTV Canada Reddit
    9
  • docker tutorial
    2 posts in the past month
    1. Recommend Docker tutorial
    2. Can anyone recommend a good Docker tutorial?
    #2
    docker tutorial
    Recommend Docker tutorial · Can anyone recommend a good Docker tutorial?
    2
View full analysis on GummySearchSynced 10/1/2026

Frequently asked questions

Who is r/docker for?
Best for Self-Hosters enthusiasts looking for a Reddit-based community with forum discussion.
Is r/docker free to join?
This listing is not marked as paid-only. Access rules and any fees are decided by the community.
How many members does r/docker have?
Roughly 323K members, based on figures reported by the community or its host. Member counts are approximate and change over time.
What platform is r/docker on?
r/docker runs on Reddit. Reddit communities (or "subreddits") are forum-based groups on the popular social news aggregation, web content rating, and discussion website Reddit. Reddit is commonly known as "the front page of the internet". Users submit content to the site such as links, text posts, and images, which are then voted up or down and discussed by other members. From investing Reddit communities, to professional ones, to ones just for laughs, you're likely to find a community for you on Reddit.
What topics does r/docker cover?
On the Hive Index, r/docker is organized under Self-Hosters.
How do I join r/docker?
You can join r/docker by clicking this link, or pressing the "Go to community" button above.
What are the Self-Hosting communities like?
Communities for people running their own servers, home labs, and self-hosted applications. Reddit dominates with massive communities for home automation, self-hosted media servers, and container orchestration, covering everything from beginner setup to advanced homelab builds.
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Added 3/13/2026

Monthly Stats

13
Views /mo
(+30%)
13
Visitors /mo
(+30%)
0
Referrals /mo

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