CODEWITHSUNDEEP
docker
stanaka
stanaka

Reputation: 397

`docker build` command hangs for a very long time, other commands work fine

Simple question: After using Docker for about a week, my docker build command gets bogged down and hangs (before anything executes) for about a minute. After staying in this hanging state, it will execute the docker build command with no issues at all and at at the expected speed.

Other Docker commands (like docker run) do not suffer from this "hanging" issue.

Docker Installation info:

Version 18.06.1-ce-win73
Channel: stable

Things I have tried:

Does anyone else suffer from this issue?

Upvotes: 6

Views: 16411

Answers (5)

Benbob
Benbob

Reputation: 14264

Ensure you have a .dockerignore file excluding any bulky dev or build packages. In my case I was building a node js project and docker build was choking on node_modules.

Upvotes: 0

largehadroncollider
largehadroncollider

Reputation: 95

My situation was solved by the hint from Fco's answer above.

Basically, I was not mindful of my build context size. I had a git submodule that gathered a lot of data after usage that was bloating the build context. The solution was to include this (and other directories and subfolders not essential to the build) in the aforementioned .dockerignore file.

That would also explain why copying the Dockerfile to a different directory does the trick.

Upvotes: 1

Kaustav Mukherjee
Kaustav Mukherjee

Reputation: 1

2 reasons:

1.If you are building many dockers for hours ..please restart your router if possible as sometimes due to heavy data packets movement the router collapses.

2.Increase RAM ,CPU and Swap of docker engine and restart docker and try to build again.

Upvotes: -2

Fco
Fco

Reputation: 307

I had the same issue. I solved it moving the Dockerfile to an empty folder, then I executed the docker build command and worked perfectly.

On some other forums people created a .dockerignore file including the any call to git and many other files, but that approach didn't work for me.

Upvotes: 7

stanaka
stanaka

Reputation: 397

Here was the the issue:

The very first line of my Dockerfile (the FROM command) was failing. The "hanging" was caused by a timeout during the attempt to download the base image. I was attempting to download the base image from a location that I needed to set a proxy on my machine for.

So I was mistaken in my original post: The Docker build command wasn't running as expected. It was failing to download the base image due to a missing proxy setting.

Upvotes: 3

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