Dockerfile doesn't build (anymore)

I'm trying to build the image but it fails:

# docker build . -t ansible-gendoc:0.1.0 -t ansible-gendoc:latest
DEPRECATED: The legacy builder is deprecated and will be removed in a future release.
            Install the buildx component to build images with BuildKit:
            https://docs.docker.com/go/buildx/

Sending build context to Docker daemon  167.4kB
Step 1/13 : FROM alpine:3.16 as builder
 ---> 187eae39ad94
Step 2/13 : ENV PYROOT=/venv
 ---> Using cache
 ---> 0dbeacaac887
Step 3/13 : ENV PYTHONUSERBASE=$PYROOT
 ---> Using cache
 ---> 9c287e04fd6b
Step 4/13 : WORKDIR /
 ---> Running in 617d2b5ca705
Removing intermediate container 617d2b5ca705
 ---> 2a933b55ae37
Step 5/13 : RUN <<EOF
 ---> Running in a63247356dca
Removing intermediate container a63247356dca
 ---> 7a4690851cd8
Step 6/13 : COPY . /
 ---> 090e9302f59d
Step 7/13 : RUN <<EOF
 ---> Running in d1dbf282c988
Removing intermediate container d1dbf282c988
 ---> f9bf33edda12
Step 8/13 : FROM alpine:3.16 as default
 ---> 187eae39ad94
Step 9/13 : COPY --from=builder /*.whl /wheels/
COPY failed: no source files were specified

What's going on? I am unable to fix this.

# docker version
Client:
 Version:           24.0.5
 API version:       1.43
 Go version:        go1.20.6
 Git commit:        ced0996600
 Built:             Wed Jul 26 21:44:58 2023
 OS/Arch:           linux/amd64
 Context:           default

Server:
 Engine:
  Version:          24.0.5
  API version:      1.43 (minimum version 1.12)
  Go version:       go1.20.6
  Git commit:       a61e2b4c9c
  Built:            Wed Jul 26 21:44:58 2023
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          v1.7.2
  GitCommit:        0cae528dd6cb557f7201036e9f43420650207b58.m
 runc:
  Version:          1.1.9
  GitCommit:        
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

claranet / ansible-gendoc

Dockerfile doesn't build (anymore) #23