feat: add Paperless-ngx and Gatus templates

[BinkyTwin]

/claim #152

Summary

• add a Paperless-ngx template for self-hosted document management and OCR workflows
• add a Gatus template for self-hosted endpoint monitoring and status dashboards
• use pinned application/database/cache images with persistent volumes where needed
• configure Dokploy domain/env/mount settings for generated secrets, public app URLs, SQLite persistence, and editable app configuration

Refs #152 as a partial template-bounty contribution.

Verification

• node dedupe-and-sort-meta.js
• node --import ./build-scripts/node_modules/tsx/dist/loader.mjs build-scripts/validate-template.ts --dir blueprints/paperless-ngx
• node --import ./build-scripts/node_modules/tsx/dist/loader.mjs build-scripts/validate-template.ts --dir blueprints/gatus
• node --import ./build-scripts/node_modules/tsx/dist/loader.mjs build-scripts/validate-docker-compose.ts --file blueprints/paperless-ngx/docker-compose.yml
• node --import ./build-scripts/node_modules/tsx/dist/loader.mjs build-scripts/validate-docker-compose.ts --file blueprints/gatus/docker-compose.yml
• git diff --check
• docker compose -f blueprints/paperless-ngx/docker-compose.yml config
• docker compose -f blueprints/gatus/docker-compose.yml config
• docker manifest inspect ghcr.io/paperless-ngx/paperless-ngx:2.20.15
• docker manifest inspect postgres:18-alpine
• docker manifest inspect redis:8-alpine
• docker manifest inspect ghcr.io/twin/gatus:v5.36.0

[github-actions]

built with Refined Cloudflare Pages Action

⚡ Cloudflare Pages Deployment

Name	Status	Preview	Last Commit
templates	✅ Ready (View Log)	Visit Preview	0999407

[Copilot]

Pull request overview

Adds a new Dokploy blueprint for Paperless-ngx (document management + OCR), including its compose stack, Dokploy template configuration, logo asset, and a new meta.json entry so it appears in the central template index.

Changes:

• Added paperless-ngx blueprint with Docker Compose services (Paperless-ngx + Postgres + Redis) and persistent volumes.
• Added Dokploy template.toml for domain/env variable wiring (URL, secret key, DB password, timezone, OCR language).
• Registered the template in meta.json and added a paperless-ngx.svg logo.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
meta.json	Adds the Paperless-ngx template entry (id/name/version/links/tags/logo).
blueprints/paperless-ngx/docker-compose.yml	Defines Paperless-ngx + Postgres + Redis stack with healthchecks and volumes.
blueprints/paperless-ngx/template.toml	Defines Dokploy variables, domain mapping, and env injection for the compose stack.
blueprints/paperless-ngx/paperless-ngx.svg	Adds the template logo asset referenced by meta.json.

[BinkyTwin]

Adjusted in 0c3d1cc: the default PAPERLESS_URL now uses http://${main_domain} to match the repository convention for app URL env vars behind Dokploy. Re-ran template validation, Docker Compose validation, metadata processing, git diff --check, and docker compose config with the updated URL.

[Copilot]

Pull request overview

Copilot reviewed 5 out of 7 changed files in this pull request and generated 1 comment.

[Siumauricio]

Automated template check 🤖

This PR's template was imported into a test Dokploy instance (using the docker-compose.yml + template.toml from the PR head) and deployed, and its configured domains were then checked over HTTP.

Result: ❌ some issues need attention

gatus

• Deploy: done (24s)
• Domain checks:
  • gatus:8080 → HTTP 200 ✅

paperless-ngx

• Deploy: error (49s)
• Container states at failure time: paperless-ngx-1: created · paperless-ngx-db-1: restarting · paperless-ngx-broker-1: running
• Issues:
  • the deployment finished with ERROR (see log below)
• Deploy log (tail):

Container compose-transmit-redundant-panel-55g7yd-paperless-ngx-db-1 Error dependency paperless-ngx-db failed to start
dependency failed to start: container compose-transmit-redundant-panel-55g7yd-paperless-ngx-db-1 is unhealthy
Error: ❌ Docker command failed
Error occurred ❌, check the logs for details.

The test service is removed automatically after verification. Happy to re-test once the PR is updated.

[Copilot]

Copilot was unable to review this pull request because the user who requested the review is ineligible. To be eligible to request a review, you need a paid Copilot license, or your organization must enable Copilot code review.

[Copilot]

Copilot was unable to review this pull request because the user who requested the review is ineligible. To be eligible to request a review, you need a paid Copilot license, or your organization must enable Copilot code review.

[Siumauricio]

Tested both templates on a live Dokploy instance.

gatus: worked out of the box — deployed cleanly and served HTTP 200 (Gatus title). No changes needed.

paperless-ngx: the deploy failed with dependency paperless-ngx-db failed to start — the postgres container was stuck in a restart loop and never became healthy. Root cause: the postgres:18 image moved its data directory from /var/lib/postgresql/data to /var/lib/postgresql, and its entrypoint now errors out when a volume is mounted at the old path. Fixed by changing the mount to paperless-db:/var/lib/postgresql (pushed in 0999407, matches what other postgres:18 blueprints in this repo do).

After the fix: deploy completed in ~41s and the app responded with HTTP 200 (Paperless-ngx sign in page).