在Ubuntu上部署Docker应用是一个相对简单的过程,以下是详细的步骤:
sudo apt update
sudo apt install -y apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
sudo apt update
sudo apt install -y docker-ce docker-ce-cli containerd.io
sudo docker --version
sudo systemctl start docker
sudo systemctl enable docker
sudo systemctl status docker
sudo groupadd docker
sudo usermod -aG docker $USER
newgrp docker
docker run hello-world
sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
docker-compose --version
Dockerfile
的文件,内容如下:# 使用官方Python基础镜像
FROM python:3.9-slim
# 设置工作目录
WORKDIR /app
# 复制当前目录内容到容器中的/app
COPY . /app
# 安装requirements.txt中的所有依赖项
RUN pip install --no-cache-dir -r requirements.txt
# 暴露端口5000
EXPOSE 5000
# 运行应用
CMD ["python", "app.py"]
sudo docker build -t my-app .
sudo docker run -d -p 5000:5000 --name my-app-container my-app
通过以上步骤,你可以在Ubuntu系统中成功安装并部署Docker应用。