draw.io self hosted for Nextcloud

Reasons for this:

• the official docker-drawio image
  • uses dev branch of drawio
  • is was broken because of upstream changes
  • tries to do SSL termination (via self signed or letsencrypt)
• this
  • uses latest tagged release version of drawio
  • this is HTTP only and does not enforce signing, as SSL termination is left to proxy
  • is used within existing Nextcloud instance - web interface is mostly for sharing, and draw.io desktop app is for actually working on locally synced files, i.e., no other file storage drivers needed (Google Drive, OneDrive)

Install

• Create DNS record mydrawioinstance.tld
• Create proxy (extras dir has an example for nginx proxy pass w/ SSL termination)
• Get SSL cert
• Build

git clone # this repo
cp .env.example .env
vi .env # edit mydrawioinstance.tld and ports
docker compose build && \
docker compose up --detach

• For Nextcloud draw.io app settings set Draw.io URL to https://mydrawioinstance.tld
• Profit

Variations

The main composer runs three services - PlantUML Server, image exporting server (for PDF), and draw.io itself. Here are some other variations.

draw.io only

docker compose --file ./docker-compose.drawio-base.yml build --no-cache && \
docker compose --file ./docker-compose.drawio-base.yml up

draw.io & PDF export

docker compose --file ./docker-compose.image-export.yml build --no-cache && \
docker compose --file ./docker-compose.image-export.yml up