Failing to get to run CircleCI with github

Question

I am reading Securing DevOps By Julien Vehent and I am stuck in Chapter 2 Building a barebones DevOps pipeline. I forked and cloned the book's repository % git clone https://github.com/mictadlo/Securing-DevOps-invoicer-chapter2.git. Created the webhook

Next, I ran the commands:

% cd Securing-DevOps-invoicer-chapter2 
% git checkout -b featbr1
Switched to a new branch 'featbr1'
% git add .circleci/config.yml
% git commit -m "initial circleci conf"
On branch featbr1
nothing to commit, working tree clean

I could not see anything happening with CircleCi on GitHub. Therefore, I created a CircleCi account and CircleCI pipeline:

Reading further, the author asked to compile the GO on your own computer but I did not wanted to install GO on my computer therefore I failed to modify the Dockerfile in the cloned repository.

FROM golang:latest
RUN addgroup --gid 10001 app
RUN adduser --gid 10001 --uid 10001 \
    --home /app --shell /sbin/nologin \
    --disabled-password app

RUN mkdir /app/statics/
ADD statics /app/statics/

COPY bin/invoicer /app/invoicer

# Compile the Go application
RUN go build --ldflags '-extldflags "-static"' -o invoicer github.com/Securing-DevOps/invoicer-chapter2


USER app
EXPOSE 8080
WORKDIR /app
ENTRYPOINT /app/invoicer                             

By trying to build the container, I ran into this problem:

% docker build -t invoicer . 

ERROR: Cannot connect to the Docker daemon at unix:///Users/michal/.docker/run/docker.sock. Is the docker daemon running?
(base) michal@Michals-MacBook-Pro Securing-DevOps-invoicer-chapter2 % docker build -t invoicer . 

[+] Building 3.5s (10/12)                                                  docker:desktop-linux
 => [internal] load build definition from Dockerfile                                       0.0s
 => => transferring dockerfile: 472B                                                       0.0s
 => [internal] load metadata for docker.io/library/golang:latest                           3.4s
 => [internal] load .dockerignore                                                          0.0s
 => => transferring context: 2B                                                            0.0s
 => CANCELED [1/8] FROM docker.io/library/golang:latest@sha256:70031844b8c225351d0bb63e2c  0.0s
 => => resolve docker.io/library/golang:latest@sha256:70031844b8c225351d0bb63e2c383f80db8  0.0s
 => => sha256:70031844b8c225351d0bb63e2c383f80db85d92ba894e3da7e13bcf80ef 9.74kB / 9.74kB  0.0s
 => => sha256:f2438f09939b6bce3d97a82d49d74af16fffcbd114d417c5f02240c44a6 2.32kB / 2.32kB  0.0s
 => => sha256:6401bb0d568e2d234c6341c40cb6b327363dbfc3dd8610a3277502f47db 2.82kB / 2.82kB  0.0s
 => [internal] load build context                                                          0.0s
 => => transferring context: 99.96kB                                                       0.0s
 => CACHED [2/8] RUN addgroup --gid 10001 app                                              0.0s
 => CACHED [3/8] RUN adduser --gid 10001 --uid 10001     --home /app --shell /sbin/nologi  0.0s
 => CACHED [4/8] RUN mkdir /app/statics/                                                   0.0s
 => CACHED [5/8] ADD statics /app/statics/                                                 0.0s
 => ERROR [6/8] COPY bin/invoicer /app/invoicer                                            0.0s
------
 > [6/8] COPY bin/invoicer /app/invoicer:
------
Dockerfile:10
--------------------
   8 |     ADD statics /app/statics/
   9 |     
  10 | >>> COPY bin/invoicer /app/invoicer
  11 |     
  12 |     # Compile the Go application
--------------------
ERROR: failed to solve: failed to compute cache key: failed to calculate checksum of ref b45e7083-3064-46e9-b774-35f91450c418::lfd8kr2mq0kmc5setl9c66ncq: "/bin/invoicer": not found

View build details: docker-desktop://dashboard/build/desktop-linux/desktop-linux/ykz4p84qf93sc2s1096qpubzp
(base) michal@Michals-MacBook-Pro Securing-DevOps-invoicer-chapter2

What did I do wrong?