Write a dockerfile to a file

Writes a dockerfile object to disk as a Dockerfile.

Usage

write_dockerfile(dockerfile, file = "Dockerfile", multiline = TRUE)

Arguments

dockerfile

A dockerfile object

file

Output file path (default: "Dockerfile")

multiline

Logical indicating if long RUN commands should be split (default: TRUE)

Value

Invisibly returns the dockerfile object

Details

When multiline = TRUE (the default), long RUN commands with && will be formatted with line continuations (\) for better readability. This makes the Dockerfile more maintainable without changing its functionality.

See also

read_dockerfile() for reading a Dockerfile from disk & dockerfile() for creating a new dockerfile object

Other dockerfile I/O functions: read_dockerfile()

Examples

if (FALSE) { # \dontrun{
# Create and write a simple Dockerfile
dockerfile() |>
  dfi_from("rocker/r-ver:4.4.0") |>
  dfi_run("apt-get update") |>
  write_dockerfile()
  
# Specify a different file name
dockerfile() |>
  dfi_from("rocker/r-ver:4.4.0") |>
  write_dockerfile("Dockerfile.dev")
} # }