feat: add additional_args variable to code-server module (#536)

This PR adds an `extra_args` variable to the code-server module,
allowing users to pass additional command-line arguments to code-server.

## Changes

- Added `additional_args` variable to `main.tf` with a default empty
string
- Updated `run.sh` to include `${ADDITIONAL_ARGS}` in the code-server
command
- Added documentation and example usage in `README.md`

## Use Case

This solves the issue where users want to disable the workspace trust
prompt by passing `--disable-workspace-trust` to code-server. See the
discussion in
https://codercom.slack.com/archives/C09H8LRLG8K/p1762983278455979

## Example Usage

```tf
module "code-server" {
  source               = "registry.coder.com/coder/code-server/coder"
  version              = "1.3.1"
  agent_id             = coder_agent.example.id
  additional_args      = "--disable-workspace-trust"
}
```

The `additional_args` variable can accept any additional command-line
arguments that code-server supports.

---------

Co-authored-by: blink-so[bot] <211532188+blink-so[bot]@users.noreply.github.com>
Co-authored-by: DevelopmentCats <christofer@coder.com>

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

@@ -14,7 +14,7 @@ Automatically install [code-server](https://github.com/coder/code-server) in a w
 module "code-server" {
   count    = data.coder_workspace.me.start_count
   source   = "registry.coder.com/coder/code-server/coder"
-  version  = "1.3.1"
+  version  = "1.4.0"
   agent_id = coder_agent.example.id
 }
 ```
@@ -29,7 +29,7 @@ module "code-server" {
 module "code-server" {
   count           = data.coder_workspace.me.start_count
   source          = "registry.coder.com/coder/code-server/coder"
-  version         = "1.3.1"
+  version         = "1.4.0"
   agent_id        = coder_agent.example.id
   install_version = "4.8.3"
 }
@@ -43,7 +43,7 @@ Install the Dracula theme from [OpenVSX](https://open-vsx.org/):
 module "code-server" {
   count    = data.coder_workspace.me.start_count
   source   = "registry.coder.com/coder/code-server/coder"
-  version  = "1.3.1"
+  version  = "1.4.0"
   agent_id = coder_agent.example.id
   extensions = [
     "dracula-theme.theme-dracula"
@@ -61,7 +61,7 @@ Configure VS Code's [settings.json](https://code.visualstudio.com/docs/getstarte
 module "code-server" {
   count      = data.coder_workspace.me.start_count
   source     = "registry.coder.com/coder/code-server/coder"
-  version    = "1.3.1"
+  version    = "1.4.0"
   agent_id   = coder_agent.example.id
   extensions = ["dracula-theme.theme-dracula"]
   settings = {
@@ -78,12 +78,26 @@ Just run code-server in the background, don't fetch it from GitHub:
 module "code-server" {
   count      = data.coder_workspace.me.start_count
   source     = "registry.coder.com/coder/code-server/coder"
-  version    = "1.3.1"
+  version    = "1.4.0"
   agent_id   = coder_agent.example.id
   extensions = ["dracula-theme.theme-dracula", "ms-azuretools.vscode-docker"]
 }
 ```
 
+### Pass Additional Arguments
+
+You can pass additional command-line arguments to code-server using the `additional_args` variable. For example, to disable workspace trust:
+
+```tf
+module "code-server" {
+  count           = data.coder_workspace.me.start_count
+  source          = "registry.coder.com/coder/code-server/coder"
+  version         = "1.4.0"
+  agent_id        = coder_agent.example.id
+  additional_args = "--disable-workspace-trust"
+}
+```
+
 ### Offline and Use Cached Modes
 
 By default the module looks for code-server at `/tmp/code-server` but this can be changed with `install_prefix`.
@@ -94,7 +108,7 @@ Run an existing copy of code-server if found, otherwise download from GitHub:
 module "code-server" {
   count      = data.coder_workspace.me.start_count
   source     = "registry.coder.com/coder/code-server/coder"
-  version    = "1.3.1"
+  version    = "1.4.0"
   agent_id   = coder_agent.example.id
   use_cached = true
   extensions = ["dracula-theme.theme-dracula", "ms-azuretools.vscode-docker"]
@@ -107,7 +121,7 @@ Just run code-server in the background, don't fetch it from GitHub:
 module "code-server" {
   count    = data.coder_workspace.me.start_count
   source   = "registry.coder.com/coder/code-server/coder"
-  version  = "1.3.1"
+  version  = "1.4.0"
   agent_id = coder_agent.example.id
   offline  = true
 }

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

@@ -148,6 +148,12 @@ variable "open_in" {
   }
 }
 
+variable "additional_args" {
+  type        = string
+  description = "Additional command-line arguments to pass to code-server (e.g., '--disable-workspace-trust')."
+  default     = ""
+}
+
 resource "coder_script" "code-server" {
   agent_id     = var.agent_id
   display_name = "code-server"
@@ -168,6 +174,7 @@ resource "coder_script" "code-server" {
     EXTENSIONS_DIR : var.extensions_dir,
     FOLDER : var.folder,
     AUTO_INSTALL_EXTENSIONS : var.auto_install_extensions,
+    ADDITIONAL_ARGS : var.additional_args,
   })
   run_on_start = true
 

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

@@ -16,7 +16,7 @@ fi
 function run_code_server() {
   echo "👷 Running code-server in the background..."
   echo "Check logs at ${LOG_PATH}!"
-  $CODE_SERVER "$EXTENSION_ARG" --auth none --port "${PORT}" --app-name "${APP_NAME}" > "${LOG_PATH}" 2>&1 &
+  $CODE_SERVER "$EXTENSION_ARG" --auth none --port "${PORT}" --app-name "${APP_NAME}" ${ADDITIONAL_ARGS} > "${LOG_PATH}" 2>&1 &
 }
 
 # Check if the settings file exists...