How do I run a docker instance from a DockerFile?
Download the file and from the same directory run docker build -t nodebb .
This will give you an image on your local machine that's named nodebb that you can launch an container from with docker run -d nodebb
(you can change nodebb to your own name).
You cannot start a container from a Dockerfile.
The process goes like this:
Dockerfile =[
docker build
]=> Docker image =[docker run
]=> Docker container
To start (or run) a container you need an image. To create an image you need to build the Dockerfile[1].
[1]: you can also docker import
an image from a tarball or again docker load
.
While other answers were usable, this really helped me, so I am putting it also here.
From the documentation:
Instead of specifying a context, you can pass a single Dockerfile inthe URL or pipe the file in via STDIN. To pipe a Dockerfile fromSTDIN:
$ docker build - < Dockerfile
With Powershell on Windows, you can run:
Get-Content Dockerfile | docker build -
When the build is done, run command:
docker image ls
You will see something like this:
REPOSITORY TAG IMAGE ID CREATED SIZE<none> <none> 123456789 39 seconds ago 422MB
Copy your actual IMAGE ID and then run
docker run 123456789
Where the number at the end is the actual Image ID from previous step
If you do not want to remember the image id, you can tag your image by
docker tag 123456789 pavel/pavel-build
Which will tag your image as pavel/pavel-build