Github Actions构建Docker镜像比本地大4倍的问题求助

我正在开发一款应用，使用Github Actions执行CI/CD流程，构建Docker镜像并推送到AWS ECR云镜像仓库。但发现通过Github Actions构建的镜像大小是本地构建的4倍以上。

以下是同一代码通过两种方式构建后，云镜像仓库中的大小差异截图：

Github Actions配置文件 #

name: Build and Push Summarizer App Docker Image to AWS ECR
on:
  push:
    branches: [ master ]

jobs:
  build-and-push:
    name: Build Image & Push to ECR
    runs-on: ubuntu-latest
    steps:
    - name: Checkout
      uses: actions/checkout@v3

    - name: Configure AWS credentials
      uses: aws-actions/configure-aws-credentials@v1
      with:
        aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
        aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
        aws-region: eu-central-1

    - name: Login to AWS ECR
      id: login-ecr
      uses: aws-actions/amazon-ecr-login@v1

    - name: Build, Tag, and Push the Image to AWS ECR
      id: build-image
      env:
        ECR_REGISTRY: ${{ steps.login-ecr.outputs.registry }}
        ECR_REPOSITORY: summarizer-service
        IMAGE_TAG: latest
      run: |
        docker build -t $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG .
        docker push $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG

Dockerfile内容 #

from python:3.9-slim-buster


run apt-get update
run apt-get install -y python3 python3-dev python3-setuptools python3-pip git-all
run apt-get install -y nginx supervisor

run pip3 install uwsgi

run apt-get install -y software-properties-common
run apt-get update
run add-apt-repository -y ppa:nginx/stable
run apt-get install -y sqlite3


COPY ./requirements.txt /home/docker/
run pip3 install -r /home/docker/requirements.txt

COPY ./nginx-app.conf /home/docker/
COPY ./supervisor-app.conf /home/docker/
COPY ./uwsgi.ini /home/docker/
COPY ./uwsgi_params /home/docker/

COPY ./app /home/docker/app

# setup all the configfiles
run echo "daemon off;" >> /etc/nginx/nginx.conf
run rm /etc/nginx/sites-enabled/default
run ln -s /home/docker/nginx-app.conf /etc/nginx/sites-enabled/
run ln -s /home/docker/supervisor-app.conf /etc/supervisor/conf.d/


expose 80
expose 443
cmd ["supervisord", "-n"]

我分别通过Github Actions和本地Docker命令构建镜像，两者镜像内容一致，但尺寸差异极大，希望得到排查原因及优化的宝贵建议。

Github Actions构建的镜像内容截图：

本地构建的镜像内容截图：

内容的提问来源于stack exchange，提问作者Jack Daniel