Docker

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The fastest way to run PreviewProxy is with Docker. The official image is published to the GitHub Container Registry.

Quick Start

docker run -d -p 8080:8080 ghcr.io/vigrise/previewproxy:latest

PreviewProxy will be available at http://localhost:8080.

Test It

Open the following URL in your browser to resize and convert a public image to WebP:

http://localhost:8080/400x300,webp/https://http.cat/200

The URL format is:

http://localhost:8080/<params>/<source-url>

If the image is displayed in the browser, PreviewProxy is working.

Production Setup

Docker Compose Example

A more complete setup using Docker Compose:

services:
  previewproxy:
    container_name: previewproxy
    image: ghcr.io/vigrise/previewproxy:latest
    restart: unless-stopped
    ports:
      - 8080:8080
    environment:
      # Cache tuning
      PP_CACHE_MEMORY_MAX_MB: 512
      PP_CACHE_DISK_MAX_MB: 4096
      PP_CACHE_DIR: /cache
      # Local source
      # PP_LOCAL_ENABLED: true
      # PP_LOCAL_BASE_DIR: /local
    volumes:
      - ./previewproxy_cache:/cache
      # - /path/to/local/files:/local:ro
    logging:
      driver: "json-file"
      options:
        max-size: "10m"

PreviewProxy will be available at http://localhost:8080.

For all available configuration options, see the Environment Variables reference. To enable S3 or local filesystem sources, see S3 Source and Local Filesystem Source.