feat: add perplexica module (#596)

.icons/perplexica.svg

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+<svg width="256" height="256" viewBox="0 0 256 256" xmlns="http://www.w3.org/2000/svg">
+  <circle cx="128" cy="128" r="120" fill="black"/>
+  <polygon 
+    points="128,70 178,170 78,170"
+    fill="white"
+  />
+</svg>
+

registry/coder-labs/modules/perplexica/README.md

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+---
+display_name: Perplexica
+description: Run Perplexica AI search engine in your workspace via Docker
+icon: ../../../../.icons/perplexica.svg
+verified: false
+tags: [ai, search, docker]
+---
+
+# Perplexica
+
+Run [Perplexica](https://github.com/ItzCrazyKns/Perplexica), a privacy-focused AI search engine, in your Coder workspace. Supports cloud providers (OpenAI, Anthropic Claude) and local LLMs via Ollama.
+
+```tf
+module "perplexica" {
+  count    = data.coder_workspace.me.start_count
+  source   = "registry.coder.com/coder-labs/perplexica/coder"
+  version  = "1.0.0"
+  agent_id = coder_agent.main.id
+}
+```
+
+This module uses the full Perplexica image with embedded SearXNG for simpler setup with no external dependencies.
+
+![Perplexica](../../.images/perplexica.png)
+
+## Prerequisites
+
+This module requires Docker to be available on the host.
+
+## Examples
+
+### With API Keys
+
+```tf
+module "perplexica" {
+  count             = data.coder_workspace.me.start_count
+  source            = "registry.coder.com/coder-labs/perplexica/coder"
+  version           = "1.0.0"
+  agent_id          = coder_agent.main.id
+  openai_api_key    = var.openai_api_key
+  anthropic_api_key = var.anthropic_api_key
+}
+```
+
+### With Local Ollama
+
+```tf
+module "perplexica" {
+  count          = data.coder_workspace.me.start_count
+  source         = "registry.coder.com/coder-labs/perplexica/coder"
+  version        = "1.0.0"
+  agent_id       = coder_agent.main.id
+  ollama_api_url = "http://ollama-external-endpoint:11434"
+}
+```

registry/coder-labs/modules/perplexica/main.tf

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+terraform {
+  required_version = ">= 1.0"
+
+  required_providers {
+    coder = {
+      source  = "coder/coder"
+      version = ">= 2.5"
+    }
+  }
+}
+
+variable "agent_id" {
+  type        = string
+  description = "The ID of a Coder agent."
+}
+
+variable "docker_socket" {
+  type        = string
+  description = "(Optional) Docker socket URI"
+  default     = ""
+}
+
+variable "port" {
+  type        = number
+  description = "The port to run Perplexica on."
+  default     = 3000
+}
+
+variable "data_path" {
+  type        = string
+  description = "Host path to mount for Perplexica data persistence."
+  default     = "./perplexica-data"
+}
+
+variable "uploads_path" {
+  type        = string
+  description = "Host path to mount for Perplexica file uploads."
+  default     = "./perplexica-uploads"
+}
+
+variable "openai_api_key" {
+  type        = string
+  description = "OpenAI API key."
+  default     = ""
+  sensitive   = true
+}
+
+variable "anthropic_api_key" {
+  type        = string
+  description = "Anthropic API key for Claude models."
+  default     = ""
+  sensitive   = true
+}
+
+variable "ollama_api_url" {
+  type        = string
+  description = "Ollama API URL for local LLM support."
+  default     = ""
+}
+
+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" "perplexica" {
+  agent_id     = var.agent_id
+  display_name = "Perplexica"
+  icon         = "/icon/perplexica.svg"
+  script = templatefile("${path.module}/run.sh", {
+    DOCKER_HOST : var.docker_socket,
+    PORT : var.port,
+    DATA_PATH : var.data_path,
+    UPLOADS_PATH : var.uploads_path,
+    OPENAI_API_KEY : var.openai_api_key,
+    ANTHROPIC_API_KEY : var.anthropic_api_key,
+    OLLAMA_API_URL : var.ollama_api_url,
+  })
+  run_on_start = true
+}
+
+resource "coder_app" "perplexica" {
+  agent_id     = var.agent_id
+  slug         = "perplexica"
+  display_name = "Perplexica"
+  url          = "http://localhost:${var.port}"
+  icon         = "/icon/perplexica.svg"
+  subdomain    = true
+  share        = var.share
+  order        = var.order
+  group        = var.group
+}

registry/coder-labs/modules/perplexica/perplexica.tftest.hcl

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+run "plan_basic" {
+  command = plan
+
+  variables {
+    agent_id = "test-agent"
+  }
+
+  assert {
+    condition     = resource.coder_app.perplexica.url == "http://localhost:3000"
+    error_message = "Default port should be 3000"
+  }
+}
+
+run "plan_custom_port" {
+  command = plan
+
+  variables {
+    agent_id = "test-agent"
+    port     = 8080
+  }
+
+  assert {
+    condition     = resource.coder_app.perplexica.url == "http://localhost:8080"
+    error_message = "Should use custom port"
+  }
+}

registry/coder-labs/modules/perplexica/run.sh

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+#!/usr/bin/env sh
+
+set -eu
+
+BOLD='\033[0;1m'
+RESET='\033[0m'
+
+printf "$${BOLD}Starting Perplexica...$${RESET}\n"
+
+# Set Docker host if provided
+if [ -n "${DOCKER_HOST}" ]; then
+  export DOCKER_HOST="${DOCKER_HOST}"
+fi
+
+# 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 $${delay}s..."
+  sleep $delay
+  attempt=$(expr "$attempt" + 1)
+  delay=$(expr "$delay" \* 2)
+done
+
+# Pull the image
+IMAGE="itzcrazykns1337/perplexica:latest"
+docker pull "$${IMAGE}"
+
+# Build docker run command
+DOCKER_ARGS="-d --rm --name perplexica -p ${PORT}:3000"
+
+# Add mounts - convert relative paths to absolute
+DATA_PATH="${DATA_PATH}"
+UPLOADS_PATH="${UPLOADS_PATH}"
+
+mkdir -p "$${DATA_PATH}"
+mkdir -p "$${UPLOADS_PATH}"
+
+DATA_PATH_ABS=$(cd "$${DATA_PATH}" && pwd)
+UPLOADS_PATH_ABS=$(cd "$${UPLOADS_PATH}" && pwd)
+
+DOCKER_ARGS="$${DOCKER_ARGS} -v $${DATA_PATH_ABS}:/home/perplexica/data"
+DOCKER_ARGS="$${DOCKER_ARGS} -v $${UPLOADS_PATH_ABS}:/home/perplexica/uploads"
+
+# Add environment variables if provided
+if [ -n "${OPENAI_API_KEY}" ]; then
+  DOCKER_ARGS="$${DOCKER_ARGS} -e OPENAI_API_KEY=${OPENAI_API_KEY}"
+fi
+
+if [ -n "${ANTHROPIC_API_KEY}" ]; then
+  DOCKER_ARGS="$${DOCKER_ARGS} -e ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY}"
+fi
+
+if [ -n "${OLLAMA_API_URL}" ]; then
+  DOCKER_ARGS="$${DOCKER_ARGS} -e OLLAMA_API_URL=${OLLAMA_API_URL}"
+fi
+
+# Run container
+docker run $${DOCKER_ARGS} "$${IMAGE}"
+
+printf "\n$${BOLD}Perplexica is running on port ${PORT}$${RESET}\n"