Docker: Difference between revisions
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# Unpack the image into a "bundle". This flattens the layers into a single filesystem. | # Unpack the image into a "bundle". This flattens the layers into a single filesystem. | ||
# Run the container from the bundle | # Run the container from the bundle | ||
==Deploy App to Digital Ocean== | |||
* [vhttps://brandonlehr.com/dotnet/docker/digital-ocean/2018/11/07/dontnet-core-docker-nginx-digitalocean Deploying App to Digital Ocean from Brandon Lehr]. | |||
==References== | ==References== | ||
Revision as of 22:55, 13 November 2020
Full Title or Meme
Docker is a system for building, deploying and running complex images of a program with its runtime.
Context
- With the rise of cloud computing the need arose to give users an easy way to create a run-time package that could be sent to any cloud Platform as a Service provider (PaaS) with complete interoperability.
Solutions
Docker was released in 2013 and solved many of the problems that developers had running containers end-to-end. It had all these things:
- A container image format
- A method for building container images (Dockerfile/docker build)
- A way to manage container images (docker images, docker rm , etc.)
- A way to manage instances of containers (docker ps, docker rm , etc.)
- A way to share container images (docker push/pull)
- A way to run containers (docker run)
Open Container Initiative
- Open Container Initiative (OCI)
- OCI runtime specification.
- Google code for running containers as a tool and library called runc
When you run a Docker container, these are the steps Docker actually goes through:
- Download the image
- Unpack the image into a "bundle". This flattens the layers into a single filesystem.
- Run the container from the bundle
Deploy App to Digital Ocean
- [vhttps://brandonlehr.com/dotnet/docker/digital-ocean/2018/11/07/dontnet-core-docker-nginx-digitalocean Deploying App to Digital Ocean from Brandon Lehr].