How do I make a comment in a Dockerfile?

Question

I am writing a Dockerfile. Is there a way to make comments in this file?

Does Docker have a comment option that takes the rest of a line and ignores it?

Answer 1

Format

Here is the format of the Dockerfile:

We can use # for commenting purpose#Comment for example

#FROM microsoft/aspnetcore
FROM microsoft/dotnet
COPY /publish /app
WORKDIR /app
ENTRYPOINT ["dotnet", "WebApp.dll"]

From the above file when we build the docker, it skips the first line and goes to the next line because we have commented it using #