了解 Docker 中的卷指令
在 Docker 中，我们可以创建单独的镜像、容器和卷。 每当我们启动容器时都可以挂载卷。
如果我们可以在 Docker 中手动完成，我们可以通过使用名为 Dockerfile 的文件的构建过程来自动化它。
本文将讨论通过 Dockerfile 在 Docker 中构建、创建和装载卷。
了解 Docker 中的 VOLUME 指令
使用 Dockerfile 时，我们使用多个指令来自动构建单个或多个容器。 这些指令的一个例子是 VOLUME 指令。
在 Dockerfile 中，它应该看起来像这样：
FROM ubuntu
RUN mkdir /samplevol
VOLUME /samplevol
但是，当我们尝试在 Dockerfile 中输入 VOLUME 指令的值时，会出现一些混乱。 使用 VOLUME 指令时，我们需要了解这不是我们指示容器外部 Docker 卷位置的地方。
取而代之的是，VOLUME 指令是我们告诉目标的地方，当容器已经运行时，我们将在容器内的哪个位置挂载我们的外部 Docker 卷。
如果我们还记得的话，当我们运行一个容器时，我们可以使用 --volume 或 -v 参数来挂载一个特定的卷。 但是，此参数还有其他用途。
例如，使用 --volume 参数，我们可以指定应该在哪个位置挂载 Docker 卷。
示例命令：
$ docker run --volume=/volumesd:/samplevol sushi_bake
在上面的命令中，**/volumesd** 目录是卸载的 Docker 卷的位置。 /samplevol 目录是我们将在创建和运行的容器中安装 Docker 卷的地方。
此外，**/samplevol** 目录是 Dockerfile 中 VOLUME 指令的正确值。
或者，我们可以通过不在 Dockerfile 中添加 VOLUME 指令来避免混淆。 如果我们没有在 VOLUME 指令中添加挂载点，Docker 会为要挂载的卷分配一个默认位置。
该位置通常在 /var/lib/docker/volumes 下。
相关文章
Get the IP address of the Docker container from the host using docker inspect
发布时间：2025/03/26 浏览次数：102 分类：Docker
-
Docker containers are not just for isolation—they are often used to manage processes that still need to communicate directly with each other. However, to communicate, you usually need to know the IP address of each container, which you ca
Solution to incorrect access log time when deploying Nginx in Docker
发布时间：2025/03/26 浏览次数：165 分类：Docker
-
In the process of operating the website, I never took the logs too seriously. Although logging was turned on, I never analyzed the logs carefully. Today, when I looked at the logs on a whim, I found that the recorded time was 8 hours less t
Docker deploys nginx php application
发布时间：2025/03/26 浏览次数：131 分类：Docker
-
I'm learning docker recently. I'm learning by building an nginx+php development environment example. Here I record the build process. First, give a docker-compose.yml deployment configuration file version: '3' services: nginx: container_nam
How to use Docker to image a Node.js web application
发布时间：2025/03/26 浏览次数：107 分类：Docker
-
Docker is a containerization platform that simplifies the packaging and execution of applications. Containers run as independent processes with their own file systems, but share the kernel of their host machine. Docker has attracted much at
Start a Bash terminal in a new Docker container
发布时间：2025/03/26 浏览次数：97 分类：Docker
-
Docker containers are a standard unit for packaging all the dependencies of an application, allowing us to easily run them in any environment. Containers have become very popular recently, and most developers now rely heavily on containers
Passing environment variables to containers in Docker
发布时间：2025/03/26 浏览次数：124 分类：Docker
-
This article will introduce how to pass environment variables to containers in Docker. Passing environment variables to containers in Docker using the -e and tags -env We will first see how to create environment variables and pass them to t
Install Docker using Homebrew
发布时间：2025/03/26 浏览次数：202 分类：Docker
-
There is no doubt that Docker containers have revolutionized the way we develop and deploy applications. They provide developers with the ability to package applications and dependencies in an isolated environment. Recently, we've seen wide
Enforce clean build of images in Docker
发布时间：2025/03/26 浏览次数：87 分类：Docker
-
This article discusses and demonstrates how to enforce clean builds of images in Docker. Building images in Docker We will use a simple Flask application to demonstrate this concept. my-app Create a app.py simple application named in the ho
Running a Docker instance from a Dockerfile
发布时间：2025/03/26 浏览次数：140 分类：Docker
-
Docker containers have undoubtedly become the standard unit for managing software and dependencies in different environments. When using real applications, you must create a docker file before building the container image of the application
