Error response from daemon

[aadpM2hhdixoJm3u]

I have a clean Docker installation on Ubuntu

Description:    Ubuntu 16.04.6 LTS
Release:        16.04
Codename:       xenial

Server: Docker Engine - Community
 Engine:
  Version:          19.03.5
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.12
  Git commit:       633a0ea838
  Built:            Wed Nov 13 07:48:43 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.10
  GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
 runc:
  Version:          1.0.0-rc8+dev
  GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

And when trying to run sudo docker build -t coinmarketcap-exporter:latest . I get

> Sending build context to Docker daemon  14.34kB
> Error response from daemon: unexpected error reading Dockerfile: read /var/lib/docker/tmp/docker-builder370705474/Dockerfile: is a directory

Any idea on what causes this behavior?

[bonovoxly]

you may want to check your working directory:

git status

make sure your git is clean.