Docker build failing: Dockerfile not found error

Frontend
1

Hey folks, I’m stuck with a Docker issue. I’m trying to create an image for a simple HTML page, but I keep getting this error:

failed to solve with frontend dockerfile.v0: failed to read dockerfile: open /var/lib/docker/tmp/buildkit-mount602954594/Dockerfile: no such file or directory

My setup looks like this:

MyProject/
  |- Dockerfile.txt
  |- README.md
  |- index.html

Here’s what’s in my Dockerfile:

FROM alpine:latest
WORKDIR /app
COPY index.html .
EXPOSE 80
CMD ["cat", "index.html"]

I’m running docker build . in the MyProject folder. What am I doing wrong? I’m pretty new to Docker, so any help would be great. Thanks!

2

hey swimminfish, looks like others got u covered on the filename thing. just wanna add, make sure ur in the right directory when running the build command. double-check ur working dir matches where the dockerfile is. sometimes its an easy mistake to overlook. good luck with ur docker adventure!

3

hey there swimingfish! have u tried renaming ur dockerfile? docker usually looks for a file called ‘Dockerfile’ with no extension. maybe try that? or u could use the -f flag when building, like ‘docker build -f Dockerfile.txt .’ curious to hear if that helps! let us know how it goes :slight_smile:

4

The issue you’re encountering is likely due to the filename of your Dockerfile. Docker expects the file to be named ‘Dockerfile’ without any extension. Your file is currently named ‘Dockerfile.txt’, which Docker can’t find by default.

To resolve this, simply rename your file from ‘Dockerfile.txt’ to ‘Dockerfile’ (no extension). After renaming, try running the build command again:

docker build .

If you prefer keeping the .txt extension, you can specify the filename explicitly in your build command:

docker build -f Dockerfile.txt .

This tells Docker to use the specified file as the Dockerfile. Either approach should resolve your ‘file not found’ error and allow the build to proceed.