I'm trying create connections between docker's containers. One container with php5-fpm and second with nginx. Config for php5-fpm default, just few changes: listen = 9000 listen.allowed_clients ...

From what I read it seems that Docker-Compose is a tool to create multiple containers on a single host while Docker Swarm is a tool that can do the exact same thing but with more control and on mul...

I'm trying to understand the Docker world a little better, and can't quite seem to wrap my brain around the differences between these. I believe that OCF is an emerging container standard being end...

We have noticed that our containers are taking up a lot of space, one of the reasons for this is the images. We would like to move the images. I know right now they are stored in /var/lib/docke...

Im a trying to deploy my application using Docker and came across an issue that restarting named containers assigns a different IP to container. Maybe explaining what I am doing will better explain...

According to this github issue it should be possible to start a full container with Upstart, cron etc. with Docker 0.6 or later but how do I do that? I was expecting that docker run -t -i ubuntu ...

The ip netns creates the reference to the (named) network namespace in /var/run/ns, which could be easily tracked. Also, the same could be determined through /proc/[pid]/ns/net. However, it is poss...

The problem description I have a Docker image, which is being executed with volume mounting options a large number of times. It is built in a way so that the default user does not have root permis...

I have access to a computer running Linux with 20 cores, 92 GB of RAM, and 100 GB of storage on an HDD. I would like to use Hadoop for a task involving a large amount of data (over 1M words, over 1...

I tested redis container based on. https://index.docker.io/u/dockerfile/redis/ With same redis-benchmark, redis-server runs inside a container much slower, than run on hosted OS, the actual statis...

I have been trying to install Chef-Server in a Docker container and I am having some trouble. I am running a VM with an up to date version of Ubuntu 12.04 and latest install of Docker. I run a base...

I am trying to create a docker image for Couchbase and i get the following error with the dockerfile on CentOS image. # expose default port EXPOSE 8091 ENV PATH $PATH:/opt/couchbase/bin RUN cd /...

I had a question about applications running within Docker containers and UUID generation. Here’s our scenario: Currently our applications are using an event driven framework. For the events we ...

I'm trying to understand what's happening under the hood to a network packet coming from the wire connected to the host machine and directed to an application inside a Docker container. If it were...

I have read what the Docker is but having hard time finding of what are the real scenarios of using Docker? It would be great to see here your usages.

I have minimal Ubuntu installation in my container and I want to have Xserver running. I need XServer, because my app requires meshlabserver, which itself needs Xserver. I installed xserver-xorg a...

I have a host machine with multiple IP addresses assigned to one network interface. I'd like to configure Docker in order to have containers "responding" each one to a single IP of these IP address...

Assume I am starting a big number of docker containers which are based on the same docker image. It means that each docker container is running the same application. It could be the case that the a...

I have a simple hello world express.js application inside of a docker container. It's set to run on port 8080 and the docker file exposes this port in the image. Additionally, I publish the port wh...

Docker (www.docker.io) looks terrific. However, after installing VirtualBox, Vagrant ... and finally Docker on a Mac, I'm finding it's not possible to access the service running in the Docker cont...

I asked this question at docker's IRC over the weekend but had to head off before I'd thought through the answers: If I have a number of applications running in containers (let's, for the moment, ...