add: rstudio module

registry/coder/modules/rstudio-server/README.md

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+---
+display_name: RStudio Server
+description: Deploy the Rocker Project distribution of RStudio Server in your Coder workspace.
+icon: ../../../../.icons/rstudio.svg
+verified: true
+tags: [rstudio, ide, web]
+---
+
+# RStudio Server
+
+Deploy the Rocker Project distribution of RStudio Server in your Coder workspace.
+
+![RStudio Server](../../.images/rstudio-server.png)
+
+```tf
+module "rstudio-server" {
+  count    = data.coder_workspace.me.start_count
+  source   = "registry.coder.com/coder/rstudio-server/coder"
+  version  = "0.9.0"
+  agent_id = coder_agent.example.id
+}
+```

registry/coder/modules/rstudio-server/main.tf

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+terraform {
+  required_version = ">= 1.0"
+
+  required_providers {
+    coder = {
+      source  = "coder/coder"
+      version = ">= 2.5"
+    }
+  }
+}
+
+# Add required variables for your modules and remove any unneeded variables
+variable "agent_id" {
+  type        = string
+  description = "The ID of a Coder agent."
+}
+
+variable "docker_socket" {
+  type        = string
+  description = "(Optional) Docker socket URI"
+  default     = ""
+}
+
+variable "rstudio_server_version" {
+  type        = string
+  description = "RStudio Server version"
+  default     = "4.5.1"
+}
+
+variable "disable_auth" {
+  type        = bool
+  description = "Disable auth"
+  default     = true
+}
+
+variable "rstudio_user" {
+  type        = string
+  description = "RStudio user"
+  default     = "rstudio"
+  sensitive   = true
+}
+
+variable "rstudio_password" {
+  type        = string
+  description = "RStudio password"
+  default     = "rstudio"
+  sensitive   = true
+}
+
+variable "project_path" {
+  type        = string
+  description = "The path to RStudio project, it will be mounted in the container."
+  default     = null
+}
+
+variable "port" {
+  type        = number
+  description = "The port to run rstudio-server on."
+  default     = 8787
+}
+
+variable "enable_renv" {
+  type        = bool
+  description = "If renv.lock exists, renv will restore the environment and install dependencies"
+  default     = true
+}
+
+variable "renv_cache_volume" {
+  type        = string
+  description = "The name of the volume used by Renv to preserve dependencies between container restarts"
+  default     = "renv-cache-volume"
+}
+
+variable "share" {
+  type    = string
+  default = "owner"
+  validation {
+    condition     = var.share == "owner" || var.share == "authenticated" || var.share == "public"
+    error_message = "Incorrect value. Please set either 'owner', 'authenticated', or 'public'."
+  }
+}
+
+variable "order" {
+  type        = number
+  description = "The order determines the position of app in the UI presentation. The lowest order is shown first and apps with equal order are sorted by name (ascending order)."
+  default     = null
+}
+
+variable "group" {
+  type        = string
+  description = "The name of a group that this app belongs to."
+  default     = null
+}
+
+resource "coder_script" "rstudio-server" {
+  agent_id     = var.agent_id
+  display_name = "rstudio-server"
+  icon         = "/icon/rstudio.svg"
+  script = templatefile("${path.module}/run.sh", {
+    DOCKER_HOST : var.docker_socket,
+    SERVER_VERSION : var.rstudio_server_version,
+    DISABLE_AUTH : var.disable_auth,
+    RSTUDIO_USER : var.rstudio_user,
+    RSTUDIO_PASSWORD : var.rstudio_password,
+    PROJECT_PATH : var.project_path,
+    PORT : var.port,
+    ENABLE_RENV : var.enable_renv,
+    RENV_CACHE_VOLUME : var.renv_cache_volume,
+  })
+  run_on_start = true
+}
+
+resource "coder_app" "rstudio-server" {
+  agent_id     = var.agent_id
+  slug         = "rstudio-server"
+  display_name = "RStudio Server"
+  url          = "http://localhost:${var.port}"
+  icon         = "/icon/rstudio.svg"
+  subdomain    = true
+  share        = var.share
+  order        = var.order
+  group        = var.group
+}

registry/coder/modules/rstudio-server/run.sh

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+#!/usr/bin/env sh
+
+set -eu
+
+BOLD='\033[0;1m'
+RESET='\033[0m'
+
+printf "$${BOLD}Starting RStudio Server (Rocker)...$${RESET}\n"
+
+# Wait for docker to become ready
+max_attempts=10
+delay=2
+attempt=1
+
+while ! docker ps; do
+  if [ $attempt -ge $max_attempts ]; then
+    echo "Failed to list containers after $${max_attempts} attempts."
+    exit 1
+  fi
+  echo "Attempt $${attempt} failed, retrying in $${delay}s..."
+  sleep $delay
+  attempt=$(expr "$attempt" + 1)
+  delay=$(expr "$delay" \* 2) # exponential backoff
+done
+
+# Pull the specified version
+IMAGE="rocker/rstudio:${SERVER_VERSION}"
+docker pull "$${IMAGE}"
+
+# Create (or reuse) a persistent renv cache volume
+docker volume create "${RENV_CACHE_VOLUME}"
+
+# Run container (auto-remove on stop)
+docker run -d --rm \
+  --name rstudio-server \
+  -p "${PORT}:8787" \
+  -e DISABLE_AUTH="${DISABLE_AUTH}" \
+  -e USER="${RSTUDIO_USER}" \
+  -e PASSWORD="${RSTUDIO_PASSWORD}" \
+  -e RENV_PATHS_CACHE="/renv/cache" \
+  -v "${PROJECT_PATH}:/home/${RSTUDIO_USER}/project" \
+  -v "${RENV_CACHE_VOLUME}:/renv/cache" \
+  "$${IMAGE}"
+
+# Make RENV_CACHE_VOLUME writable to USER
+docker exec rstudio-server bash -c 'chmod -R 0777 /renv/cache'
+
+# Optional renv restore
+if [ "${ENABLE_RENV}" = "true" ] && [ -f "${PROJECT_PATH}/renv.lock" ]; then
+  echo "Restoring R environment via renv..."
+  docker exec -u "${RSTUDIO_USER}" rstudio-server R -q -e \
+    'if (!requireNamespace("renv", quietly = TRUE)) install.packages("renv", repos="https://cloud.r-project.org"); renv::restore(prompt = FALSE)'
+fi
+
+[ "${DISABLE_AUTH}" != "true" ] && echo "User: ${RSTUDIO_USER}"
+
+printf "\n$${BOLD}RStudio Server ${SERVER_VERSION} is running on port ${PORT}$${RESET}\n"