r_ver_exists

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.

internal

Automates the process of containerizing 'R' projects. The core
function of 'containr' is 'generate_dockerfile()', which analyzes an 'R'
project's environment and dependencies via an 'renv' lock file and generates
a ready-to-use 'Dockerfile' that encapsulates the computational setup. The
package helps researchers build portable and consistent workflows so that
analyses can be reliably shared, archived, and rerun across systems. See
R Core Team (2025) <https://www.R-project.org/>, Ushey et al. (2025)
<https://CRAN.R-project.org/package=renv>, and Docker Inc. (2025)
<https://www.docker.com/>.

Erwin Lares

containr

Containerize Your 'R' Project

r_ver_exists function

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

Arguments

Check if a specific Rocker image tag exists — r_ver_exists

<dl>

<dt>version</dt>
<dd>Character string. The tag to check for existence, e.g. <code>"4.4.0"</code>, <code>"devel"</code>, or <code>"4.4.0-cuda12.2-ubuntu22.04"</code>.
Must match semantic versioning or be one of <code>"latest"</code>, <code>"devel"</code>.</dd>


<dt>r_mode</dt>
<dd>Character string. One of <code>"base"</code>, <code>"rstudio"</code>, or <code>"tidyverse"</code>.
Determines which Rocker image to query.</dd>


<dt>verbose</dt>
<dd>Logical. If <code>TRUE</code>, prints messages indicating whether the version was found.</dd>

</dl>

r_ver_exists: Check if a specific Rocker image tag exists

Description

Usage

Value

Arguments