I have a Dockerfile and base image on my machine. I am attempting to build the image using the Dockerfile commands but after Docker loads the base image, it errors out and says it can't reach a machine. Unsure where this definition is.
I issued command,
docker build -t container-name -f Dockerfile .
It sucks in the base image "Sending build context to Docker daemon" up to the full file size of the base image. But then it says:
"Step 1/10 : FROM base-image
Get https://registry-1.docker.io/v2/: dial tcp: lookup registry-1.docker.io on : read udp -> : i/o timeout
Unsure why it's trying to access a registry when I have the definition and base file in that same directory.
I realized I had not loaded the base image using the Docker Load command...
It was not listed in my "docker images" Repository, therefore it was looking elsewhere.
So, if using your own local image, use:
docker load -i <base_image.tar.gz>
Then it will be in your "docker images" list, and now you can perform the command:
docker build -t -f Dockerfile .
where the Dockerfile contains first line:
FROM base_image
...
Related
I'm quite new to Docker. I'm running on Windows 10 Enterprise and am trying to containerize an existing app that runs on windows (so it's a Windows container). I don't know if this matters but the container is rather large (8 GB).
I need to share a config file (that lives on the host) with the container that the app will use when starting. I was thinking that a bind volume was simplest.
Problem: On running the image I get docker: Error response from daemon: invalid volume specification: '<source path>:<target path>'
Container was built with this command:
docker build -t my_image .
Here is the Dockerfile:
FROM mcr.microsoft.com/dotnet/framework/runtime:4.8
WORKDIR /app
COPY . .
ENTRYPOINT .\application.exe ..\Resources
Here is what I've tried
docker run -it -v c:/Users/my_user:/app my_image
I've tried every combination of C:/, C:\, C:\\, /c/, //c/, \c\, \\c\, etc.
I've tried multiple combinations of /app, //app, \app, \app, C:\app, etc.
I've also tried with and without :rw appended to the end
I've tried the ```--mount``` syntax which consistently outputs: docker: Error response from daemon: invalid mount config for type "bind": invalid mount path: '/app'. (tried a bunch of variations of /app here too)
I've tried every possible combination (except the right one). Please help!
Since you are using a Windows container, your file path will change. Try the below command, from the docs Persistent Storage in Windows Containers
docker run -it -v c:\Users\my_user:c:\app my_image
If you are using a powershell and trying to run docker using docker run command you can try this approach. It worked for me in windows powershell (vs code powershell)
docker run -v ${pwd}\src:/app/src -d -p 3000:3000 --name react-app-c2 react-app-image
Here react-app-c2 is container name and react-app-image is image name
-v is for volume and ${pwd} is for current working directory
/app/src is for the containerdirectory.
My humble Dockerfile looks like this:
# Dockerfile.Ubuntu
FROM ubuntu:latest as builder
RUN ["touch", "test"]
when building the new image with
docker build -f Dockerfile.Ubuntu -t "Dummy:1.0" .
and issuing docker images the newly created images is listed
REPOSITORY TAG IMAGE ID CREATED SIZE
Dummy 11.2 3bffa7d3048d 27 minutes ago 64.2MB
but now, when starting the image with the name docker run -it Dummy bash i receive this error:
Unable to find image 'Dummy:latest' locally C:\PATH....exe: Error response from daemon: pull access denied for Dummy, repository does not exist or may require 'docker login': denied: requested access to the resource is denied.
Using the image id works: docker run -it 3bffa7d3048d bash
and i also see the added file /test
Note: I tried all kind of character combinations (camel case, lowercase only..) with the same result.
What do i have to change to start my local image directly by name?
You're just missing the tag in your run command.
docker run -it Dummy:11.2 bash
From the docker quickstart terminal on Windows 7 64-bit, I'm following the instructions to install this docker container. I run the command,
docker run http://wiki.openstreetmap.org/wiki/nominatim
and I get this error:
c:\program files\docker toolbox\docker.exe: invald reference format.
I can't find any information about this error related to this container.
You need to pull the image first , then run the container. according to your docker command, you are trying to access a website, it is not a docker container image. so that's why it is giving you the invalid reference format.
The image name that you have specified to pull and run is wrong. The image name should be mediagis/nominatim.
Your docker run command should be
docker run mediagis/nominatim
It is not necessary to pull the image first and run it. By default docker run first tries to find such image in your machine if not then it tries to download from docker repository.
If you specify URL format it directly downloads from private repo if such image is not found in your machine.
Brief Explanation:
Docker takes whatever that is in form of url as an image and the reason for this is sometimes you may want to run image from your private repository. So here http://wiki.openstreetmap.org/wiki/nominatim is considered as an image called wiki/nominatim from a private repo called wiki.openstreetmap.org by docker and the format of private repo and image is wrong . It should be <domain.com>/image:tag where tag is optional. You are not supposed to provide protocol (http://). See this for reference Hence the error is thrown as invalid reference format.
If you would have given as docker run wiki.openstreetmap.org/wiki/nominatim it would have tried to download image called wiki/nominatim from wiki.openstreetmap.org private repo with latest tag. Since no such repo and image exists it reports Error response from daemon: error parsing HTTP 404 response body as the url throws 404: Not Found when docker daemon tries connecting to it.
References:
Pull an image from Docker Hub
Pull from a different registry
docker run
Docker run reference
Note: Unless you specify tag name which is optional docker always downloads latest tag from repo.
docker run http://wiki.openstreetmap.org/wiki/nominatim
does non make any sense syntactically ...
In any case the correct command to get the latest image is:
sudo docker pull mediagis/nominatim:3.1
Notice that each version has its own installation instructions (versions prior to 3.1 were structurally different), so please do refer to the appropriate section:
https://hub.docker.com/r/mediagis/nominatim/tags/
However I do agree with you that
docker run --restart=always -p 6432:5432 -p 7070:8080 -d -v /home/me/nominatimdata/postgresdata:/var/lib/postgresql/9.5/main nominatim sh /app/start.sh
Should be
docker run --restart=always -p 6432:5432 -p 7070:8080 -d -v /home/me/nominatimdata/postgresdata:/var/lib/postgresql/9.5/main mediagis/nominatim sh /app/start.sh
instead. The installation instructions need updating there.
In my working environment , i can't connect to the network, but i can connect to the download machine ,which can connect to network .
But i do not know how to find a docker image and download it .
The website docker hub just show the command such as "docker pull nginx" , but i can't connect to the network ,it is useless for me .
My question:
Now, I have install docker by download docker-engine.deb.
where can I get a docker image off line?
You'll need access to a registry where docker images are stored. But if you don't have images and no registry with images yet, than you have to pull the image from the internet.
A recommended way could be:
Install docker on a machine (maybe your local machine) with internet access and pull an image:
$ docker pull busybox
Use docker save to make a .tar of your image
$ docker save busybox > busybox.tar
or you can use the following syntax
$ docker save --output busybox.tar busybox
Reference is here.
You can use a tool like scp to send the .tar to your Docker server where you don't have internet access.
Now you can use docker load to extract the .tar and get your image:
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
$ docker load < busybox.tar.gz
Loaded image: busybox:latest
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
busybox latest 769b9341d937 7 weeks ago 2.489 MB
Reference is here
My docker version is
Docker version 1.12.2-cs2-ws-beta, build 050b611
I am trying to build the image using command
docker build -t iis-dockerfile .
The DockerFile content is
FROM microsoft/iss
RUN echo "Hello World - Dockerfile" > C:\inetpub\wwwroot\index.html
config.json is
{
"auths": {
"https://index.docker.io/v1/": {
"auth": <somekey>
}
}
}
On running docker build, it gives error
Sending build context to Docker daemon 2.048 kB
Step 1/2 : FROM microsoft/iss
unauthorized: authentication required
I have already done docker login. That's how config.json is created. I am new to containers and following the get started tutorial https://blogs.msdn.microsoft.com/allthingscontainer/2016/09/15/windows-containers-getting-started-a-step-by-step-guide/. Any idea how can I work around this.
Also I figured out that docker pull is working for me. While this also required authentication
Just an observation. Make sure your docker file has correct base image name. Are you sure you want FROM microsoft/iss and not FROM microsoft/iis?
When I tried to create new image with correct base image. It seem to work.
Docker docker build -t test-iid .
Sending build context to Docker daemon 344.9 MB
Step 1/2 : FROM microsoft/iis
latest: Pulling from microsoft/iis
3889bb8d808b: Downloading
3430754e4d17: Downloading
7aee39cd34f9: Downloading [> ] 540 kB/122.7 MB
5b8e6b632025: Download complete
e067d71858d2: Download complete