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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...

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...

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...

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...

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...

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 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...

This tutorial will discuss the difference between the git clone and commands. git pull git pull Using commands in Git We use git pull the command to get updates from the remote to the local. This command will update the files in the local r...

This article discusses the simplest and cleanest way to list conflicting files in Git. We can use git status the command, but it is cumbersome, especially when we have a large number of non-conflicting files. A simpler and more concise way...

This article discusses the necessary steps to stage deleted files in Git. We know that the rm command can delete a file without removing it from the working directory. So, how do we stage the deleted files for commit? Staging deleted files...

Normally, Docker does not delete stopped containers, it only unmarks them. This process occurs to avoid accidental deletion of stopped containers. This article will discuss how to properly remove unused and untagged containers to reclaim re...

In Docker, we can use an easy way to rename an image without rebuilding it from scratch. This article will discuss how to rename an image using Docker. Renaming an image in Docker We can rename an image or change the repository name by chan...

In Docker, we can create separate images, containers, and volumes. Whenever we start a container, we can mount the volume. If we can do it manually in Docker, we can automate it through a build process using a file called Dockerfile. This a...

In Docker, we cannot run terminal commands seamlessly if we do not create and start a container and execute in the container's shell. An example of these commands is changing the working directory. Changing the working directory is essentia...

Docker containers have become the de facto way to manage software and dependencies in different environments. When working with real-world applications, you will undoubtedly need to create a Dockerfile before you can build your application...