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r/docker is a subreddit with 221k members. Its distinguishing qualities are that the community is huge in size, and has high activity.
[Docker](http://www.docker.io) 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.
Popular Themes in r/docker
#1
Advice Requests
: "How do you manager your backups when running docker?"
33 posts
#2
Pain & Anger
: "Docker Swarm: WHY??"
25 posts
#3
Solution Requests
: "How can you block a Docker container from being able to access the Internet, while still allowing connections from the local network?"
16 posts
#4
Ideas
: "Scan Dockerfiles & Compose for Security Issues [IDE plugin]"
3 posts
Popular Topics in r/docker
#1
Docker
: "Docker Swarm: WHY??"
214 posts
#2
Container
: "Do Docker Containers respect the hosts firewall rules?"
72 posts
#3
Containers
: "Containers don't restart properly after reboot"
44 posts
#4
Help
: "Docker python Help"
36 posts
#5
Issue
: "Scan Dockerfiles & Compose for Security Issues [IDE plugin]"
34 posts
#6
Server
: "Added a new drive to my Server and want to use it with docker"
26 posts
#7
Network
: "How can you block a Docker container from being able to access the Internet, while still allowing connections from the local Network?"
25 posts
#8
Networking
: "Question about docker Networking"
24 posts
#9
Pricing
13 posts
#10
Issues
8 posts
Member Growth in r/docker
Daily
+123 members(0.1%)
Monthly
+3k members(1.4%)
Yearly
+34k members(18.3%)
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