How do I make a comment in a Dockerfile?
In a Dockerfile, you can add comments to provide information about the Dockerfile and the instructions in it. Comments in Dockerfiles start with the # symbol and continue to the end of the line.
For example, to add a comment explaining the purpose of a particular instruction in the Dockerfile, you can use the # symbol to add a comment like this:
# Install required packages
RUN apt-get update && apt-get install -y \
package1 \
package2 \
package3
The comment in this example starts with the # symbol and continues to the end of the line. When the Dockerfile is built, the comments are ignored by the Docker daemon and do not affect the build process. Comments can be used to provide information about the Dockerfile, explain the purpose of individual instructions, or provide instructions for running the image.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
-
What is the difference between "expose" and "publish" in Docker?
In Docker, "expose" and "publish" are two related but distinct concepts that are used to control network access to containers. The "expose" instruction is used in a Dockerfile to specify which port...
Questions -
What Is the Difference between Docker-Compose Ports and Expose?
You may have wondered what is the difference between docker-compose ports and docker-compose expose. Here is a clear explanation to help you better understand the matter. Ports Ports mentioned in t...
Questions -
How To Deal With Persistent Storage (e.g. Databases) In Docker?
The best way to deal with persistent data storage (such as a database) in Docker is to use Docker’s volume API (for docker 1.9.0 or newer) or use data-only containers for older versions of Docker. ...
Questions -
How to Mount a Host Directory in a Docker Container?
If you want to mound a host directory in a Docker container, you have to main ways to do that: Using the ADD command: The simplest way is to use the dockers ADD command as shown below: ADD . /path/...
Questions
We are hiring.
Software is our way of making the world a tiny bit better. We build tools for the makers of tomorrow.
Help us in making the internet more reliable.
Help us with developer education and get paid.
Reliability is the
ultimate feature
Delightful observability tools that turn your logs & monitoring into a secret weapon for shipping better software faster.
Explore Better Stack