#Docker run port map how to
#Docker run port map software

Just like you have tables and relations in a relational database, for document databases the focus is on documents: those are dynamic structures, meaning that they don't have a strict schema, but can be extended as you wish. The -p flag maps the external and the internal ports, allowing us to access the container navigating to localhost:8089. If the container exposes the port 80, we can run docker run -p 8089:80 image-name. But that ports belong to the container! Since we need to access the container from our localhost, we need to map a local port to one of the ports exposed by the container. Once the container is up and running, it exposes one or more ports (for example, the container for an API may expose port 80). But we haven't finished yet! Docker containers ports So now we have our container accessible within the machine.

docker rm stops and removes the specified container.

docker stop stops the specified container.

docker ps -a lists all the containers, also the ones stopped.

docker ps lists all the containers currently up.

docker run creates and runs a container using the specified image.

Once you have downloaded an image, you can 'build' it to have your container up and running:

docker rmi removes the specified image from your machine Ĭontainers are the living versions of an image.

docker image ls lists all the downloaded images stored on your machine.

docker pull downloads the specified image from Docker Hub.

There are few commands to know when working with images: Most of the images are available on DockerHub: this is a library of official images of various types, from databases to frameworks, from operating systems to cache platforms. Do you remember snapshots from the VM world? Well, images are the same for containers: a set of instructions and file system layers that, when executed, allow your container to be alive. Images are the blueprints that contain all the information to run a container.

#Docker run port map how to

You can refer to the Getting Started page on the project's website to know how to download and install it.īut, first, let me introduce the key concepts to know about Docker: images and containers.

#Docker run port map software

You've probably heard of Docker: it is an open-source project that allows developers to run, create and distribute unit of software in a standardized way it works with containers, that, simplifying a lot, are isolated applications with their own file systems and that can be run anywhere: think of them as VMs, but with a different and lighter underlying structure.įirst of all, you must install Docker on your machine. First of all, I'll explain what is Docker and what it can do for us then we'll run MongoDB on a Docker container. In this article, I'm going to explain how you can try out the functionalities of MongoDB without installing it, but running it on a Docker container.