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There are different types of communication on the Internet, the most common ones include file transfers, sending emails, and serving web pages. To make this communication possible, we make use of port numbers that help identify the type of...

As we develop our applications, we often make changes or add more features to make the application more effective for the different users who interact with the application. When using Docker, we need to ensure that the changes or features w...

Both docker and docker compose docker run Docker containers. The two Docker constructs are comparable, but that's about it. This article will discuss docker compose the main differences between docker and . Differences between Docker and Do...

When using docker-compose up, we can see the logs of all containers in the YAML file; however, if we specify a specific container service, the output will not show any service dependencies in the log. Therefore, this article will explore ho...

Docker makes it easier for developers to build, test, and deploy applications without worrying about dependencies by packaging them in standardized units called containers. Docker-compose is an advanced, must-have tool for managing multi-co...

After several iterations, Docker Registry was upgraded from version 1 to version 2. Especially being new, some commands needed to be included or adequately documented on its official documentation website. An example is getting a list of im...

While it is highly recommended to secure your registry using a Transport Layer Security (TLS) certificate issued by a known Certificate Authority (CA), we have the option of using our insecure registry over an unencrypted Hypertext Transfer...

When developing applications, we usually use database management systems such as PostgreSQL, MySQL, MongoDB, etc. to record application data. Docker helps us run an instance of these application database management systems. This helps save...

This article is about using variables in Bash scripts and how to insert these variables in Bash scripts. Variables in Bash Scripts Every programming language has variables with specific data types. Similarly, Bash script also allows us to u...

Sometimes, we need to check if a variable contains a value. This is important when working on projects that contain user input to be run. In Bash scripting, we can check in many ways whether a variable contains a value. This article will sh...

This article explains how to wait for background processes in Bash. Bash waits for background processes The wait command in Bash can be used to wait for all background processes to complete. This command will wait for the process and return...

When you execute a command in the terminal, you need to wait for the command to finish executing. This is called the foreground process. However, some advanced programs need to run in the background. In Bash scripts, there is an easy way to...

This article will explain how to change users in Bash. Bash Change User There are multiple ways to change users in Bash. We can use su command or sudo command to change users directly or use methods to switch to root user. To change users i...

This article explains how to find all files with an extension in Bash. Find all files with extension in Bash Finding files with a specific extension in Bash is a simple operation. We can use the find command with the -name option to find fi...

This article explains how to recursively loop through directories in Bash. Looping through directories recursively in Bash When dealing with different directories, it is often necessary to traverse the directories. We can use similar comman...