GitHub Action Is Not Publishing to ghcr.io What's Wrong with Dockerfile

I have a GitHub Action that needs to publish a Dockerfile to a specific organization. The action looks like this:

name: Docker dataeng_github_metrics

# Run workflow on tags starting with v (eg. v2, v1.2.0)
on:
  push:
    branches: [ "master" ]
    paths:
      - ./data_pipelines/dataeng_github_metrics/*
  pull_request:
    branches: [ "master" ]

jobs:
  Deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Code
        uses: actions/checkout@v1
        
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: $
          password: $
          
      - name: Build and Push Docker Image
        uses: docker/build-push-action@v2
        with:
          file: ./data_pipelines/dataeng_github_metrics/Dockerfile
          push: true # Will only build if this is not here
          tags: |
           ghcr.io/mirantis/dataeng_github_metrics:latest

The problem is that when I run the Dockerfile locally it works, but on this specific action workflow, it does not work. Instead, I get the following:

ERROR: failed to solve: failed to compute cache key: "/go.sum" not found: not found
Error: buildx failed with: ERROR: failed to solve: failed to compute cache key: "/go.sum" not found: not found

And upon inspecting the Dockerfile:

###############
# CACHE IMAGE #
###############
ARG GO_IMAGE=golang:1.17.3-alpine3.14
ARG BASE_IMAGE=alpine:3.14.2

FROM ${GO_IMAGE} AS cache
# Add the keys
ARG GITHUB_ID
ENV GITHUB_ID=$GITHUB_ID
ARG GITHUB_TOKEN
ENV GITHUB_TOKEN=$GITHUB_TOKEN

# Install Git
RUN apk add git

# TODO: ENCRYPT THE GITHUB_ID AND GITHUB_TOKEN
# Make Git Configuration
RUN git config \
    --global \
    url."https://${GITHUB_ID}:${GITHUB_TOKEN}@github.com/".insteadOf \
    "https://github.com/"

WORKDIR /bin
COPY go.mod go.sum /bin/
RUN go mod download

##############
# BASE IMAGE #
##############
FROM cache AS dataeng_github_metrics
COPY . /bin
WORKDIR /bin

# Setup Git Terminal Prompt & Go Build
RUN go build .

###############
# FINAL IMAGE #
###############
FROM ${BASE_IMAGE}
COPY --from=dataeng_github_metrics /bin/dataeng_github_metrics bin/
ENTRYPOINT [ "bin/dataeng_github_metrics" ]

It fails at the following:

COPY go.mod go.sum /bin/

This builds locally so I don't understand what the issue is.