Check if a specific Rocker image tag exists — .r_ver

Validates the format of a version string and checks whether it exists among the available tags for a specified Rocker image on Docker Hub. Supports semantic versioning, CUDA variants, and Ubuntu suffixes.

Usage

.r_ver_exists(version, r_mode = "base", verbose = FALSE)

Arguments

version: Character string. The tag to check for existence, e.g. "4.4.0", "devel", or "4.4.0-cuda12.2-ubuntu22.04". Must match semantic versioning or be one of "latest", "devel".
r_mode: Character string. One of "base", "rstudio", or "tidyverse". Determines which Rocker image to query.
verbose: Logical. If TRUE, prints messages indicating whether the version was found.

Value

Logical. TRUE if the specified version tag exists for the given Rocker image; otherwise FALSE.