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Questions tagged [docker-buildkit]

142 questions
9
votes
3 answers

Docker build failed to compute cache key

I have the below project structure Mode LastWriteTime Length Name ---- ------------- ------ ---- d----- 4/22/2021 1:49 PM App_Start d----- 3/20/2020 3:35 PM …
sorosh_sabz
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9
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2 answers

How to use the mounted ssh in docker for subsequent commands in Dockerfile

I have to do a git push while running my container using CMD. But the ssh is not available in the last line i.e in the CMD part, to do a git push. What can I do here to get the ssh key for git push? Someone please help me. Please find my…
Mohan Suresh Ramasamy
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9
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0 answers

How do you view the docker build cache for buildkit builds?

I've gotten an image building using the new DOCKER_BUILDKIT=1 builder, specifically to use --mount=cache. After building my image a couple times I noticed the cache usage is already past 3Gb, I'd like to see the size of the objects in the cache to…
Xavier Denis
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8
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1 answer

What exactly is the frontend and backend of docker buildkit?

I am exploring the docker build process using the Buildkit. I have enabled it by setting an environment variable DOCKER_BUILDKIT=1 on the CLI before invoking docker build. From the buildkit documentation it says, To use an external Dockerfile…
Kishor Unnikrishnan
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8
votes
1 answer

Docker build: how to get full RUN command output?

Update: This question is refactored with a MVRE. Is there a way I can see the full RUN command from a Dockerfile built with docker build? E.g. if my Dockerfile has the statement: # Dockerfile FROM alpine:3.7 as base RUN echo "this is the song that…
StoneThrow
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8
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2 answers

Docker BuildKit --mount=type=cache not working, why?

I am trying to implement Buildkit's cache mount feature. My Dockerfile is: # syntax = docker/dockerfile:experimental FROM python:3.6-alpine RUN --mount=type=cache,target=/root/.cache/pip pip install pyyaml CMD: docker build --progress=plain -t…
codersofthedark
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7
votes
2 answers

How to Use Docker Build Secrets with Kaniko

Context Our current build system builds docker images inside of a docker container (Docker in Docker). Many of our docker builds need credentials to be able to pull from private artifact repositories. We've handled this with docker secrets..…
treekong
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6
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1 answer

How to use secrets when building docker compose locally

I recently started using Buildkit to hide some env vars, and it worked great in prod by gha! My Dockerfile now is something like this: # syntax=docker/dockerfile:1.2 ... RUN --mount=type=secret,id=my_secret,uid=1000 \ MY_SECRET=$(cat…
Jonatan Lavado
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6
votes
2 answers

"docker build" requires exactly 1 argument

I just want to build a dockerfile from a different directory, I tried the following command docker build -f C:/Users/XXXX/XXXX/XXXX/XXXX/XXXX/Dockerfile and docker build -f C://Users/XXXX/XXXX/XXXX/XXXX/XXXX/Dockerfile Both of them yield the same…
Ajay Sabarish
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6
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0 answers

Missing /v8 variant from linux/arm64 platform

I'm using buildx for my multiarch Docker build. The base image python:3.8.5-alpine has linux/arm64/v8 as one of its OS/archs, but the resulting image (corralpeltzer/newtrackon) has the variant /v8 missing, creating an image with linux/arm64 in its…
Miguel Ángel Corral Peltzer
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1 answer

Does the order of --cache-from arguments matter when building an image with Docker Buildkit?

Suppose I am building an image using Docker Buildkit. My image is from a multistage Dockerfile, like so: FROM node:12 AS some-expensive-base-image ... FROM some-expensive-base-image AS my-app ... I am now trying to build both images. Suppose that…
ecbrodie
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5
votes
1 answer

How to specify where to push using docker buildx build command

I was reading the docs regarding docker buildx build to build to multiple architectures and I got puzzled with the --push option, it says that it pushes to the registry directly but how does it know or how can I specify where I want it to push the…
RabidTunes
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5
votes
1 answer

Running BuildKit using docker buildx behind a proxy

My organization uses a http/https proxy. Traffic to the internet must be routed via this proxy. We're adding multi-architecture support to our jenkins pipelines which build and push the docker images. The HTTP_PROXY and HTTPS_PROXY environment…
darthcrumpet
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5
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0 answers

How to increase the amount of lines shown by Docker BuildKit?

When building a Docker image with BuildKit enabled, it only shows the last 6 lines the build log at the same time. --progress=plain shows all the thousands of lines at once but I would like to get something in between, let's say 20. Is it possible…
Konrad Höffner
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5
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1 answer

Caching Go Depencencies in Docker

I've read articles in which it is advised to have a dedicated go mod download layer for downloading go dependencies. I understand that the layer is cached and if the dependencies don't change in the next build, the cached layer will be used, saving…
Danial
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