Add a MAINTAINER instruction to a dockerfile (deprecated)

Adds a MAINTAINER instruction to specify the author of the image. This instruction is deprecated in favor of using LABEL maintainer=....

Usage

dfi_maintainer(dockerfile, maintainer)

Arguments

dockerfile

A dockerfile object

maintainer

Maintainer info (e.g., "Name email@example.com")

Value

An updated dockerfile object with the MAINTAINER instruction added

Details

The MAINTAINER instruction has been deprecated since Docker 1.13.0 (2017) in favor of using LABEL maintainer=.... This function is provided for compatibility with older Dockerfiles, but new Dockerfiles should use dfi_label(maintainer = ...) instead.

See also

dfi_label() for the recommended way to specify the maintainer & Official Docker deprecated MAINTAINER documentation

Other dockerfile instruction functions: dfi_add(), dfi_arg(), dfi_cmd(), dfi_copy(), dfi_entrypoint(), dfi_env(), dfi_expose(), dfi_from(), dfi_healthcheck(), dfi_label(), dfi_onbuild(), dfi_run(), dfi_shell(), dfi_stopsignal(), dfi_user(), dfi_volume(), dfi_workdir()

Examples

# Using the deprecated MAINTAINER instruction
df <- dockerfile() |>
  dfi_from("rocker/r-ver:4.4.0") |>
  dfi_maintainer("John Doe <john@example.com>")
#> Warning: MAINTAINER is deprecated. Use `dfi_label(maintainer = ...)` instead.
df
#> FROM rocker/r-ver:4.4.0
#> MAINTAINER John Doe <john@example.com> 
   
# Better approach using LABEL
df <- dockerfile() |>
  dfi_from("rocker/r-ver:4.4.0") |>
  dfi_label(maintainer = "John Doe <john@example.com>")
df
#> FROM rocker/r-ver:4.4.0
#> LABEL maintainer="John Doe <john@example.com>"