Passing Additional Configurations to Docker Containers
Explore how to pass additional configurations to Docker containers using command-line flags. Learn to use environment variables for setting parameters, credentials, and app behavior, using -e and --env-file flags for efficient management of multi-variable configurations.
We'll cover the following...
We have built and run Docker images using very simple Docker build and Docker run commands. But a lot more can be done with the help of flags.
Let's have a look at a few CLI flags that can be used with Docker run commands to make our application more flexible.
Passing environment variables
Using environment variables in the code can prove to be very handy. These could be used for:
Setting configuration parameters with ease.
Passing credentials instead of hardcoding them in the code, thereby making the app more secure. ...