Add Calibre-Web infrastructure

.env.example

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+# Calibre-Web / books.mischlabs.de
+TZ=Europe/Berlin
+PUID=1000
+PGID=1000
+
+# External NAS port. Reverse proxy points books.mischlabs.de to this port.
+APP_PORT=8083
+
+# Persistent NAS paths. Keep these as bind mounts; do not move book data into Git.
+BOOKS_PATH=/volume1/calibreweb/data/books
+CONFIG_PATH=/volume1/calibreweb/data/config

.gitignore

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+.env
+*.log
+tmp/
+cache/
+

Brain.md

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+# Calibre-Web Brain
+
+Service: Calibre-Web / Books
+
+Domain:
+
+```text
+https://books.mischlabs.de
+```
+
+Gitea target:
+
+```text
+https://git.mischlabs.de/MrDiderot/CalibreWeb.git
+```
+
+Current NAS state captured on 2026-05-21:
+
+```text
+Container: calibre-web
+Image:     lscr.io/linuxserver/calibre-web:latest
+Ports:     0.0.0.0:8083->8083/tcp, :::8083->8083/tcp
+Status:    Up 4 days
+```
+
+Mounts:
+
+```text
+/volume1/calibreweb/data/books  -> /books
+/volume1/calibreweb/data/config -> /config
+```
+
+Environment:
+
+```text
+TZ=Europe/Berlin
+PUID=1000
+PGID=1000
+```
+
+Note: The live Compose file uses `PGID=${PGID:-10}`, but the inspected running container reported `PGID=1000`. This likely comes from the NAS `.env`. Preserve the NAS `.env` value when redeploying.
+
+Compose path on NAS:
+
+```text
+/volume2/docker/calibreweb/docker-compose.yml
+```
+
+Decision:
+
+- This is currently an infrastructure repository, not a custom app image repository.
+- Use the upstream image `lscr.io/linuxserver/calibre-web:latest`.
+- The universal Watchtower instance on the NAS can update this service directly.
+- Only add a Dockerfile and Gitea Actions workflow if custom image changes become necessary later.
+- The initial `docker-compose.yml` in this repo was copied from the live NAS compose file at `/volume2/docker/calibreweb/docker-compose.yml`.
+
+Important:
+
+- Do not move or delete `/volume1/calibreweb/data/books`.
+- Do not move or delete `/volume1/calibreweb/data/config`.
+- If Calibre-Web appears empty after deployment, check bind mounts before assuming data loss.

README.md

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+# Calibre-Web / Books
+
+Infrastructure repository for the Calibre-Web service at:
+
+```text
+https://books.mischlabs.de
+```
+
+The service currently uses the upstream LinuxServer image:
+
+```text
+lscr.io/linuxserver/calibre-web:latest
+```
+
+No custom Docker image is required right now. Gitea stores the Compose setup and documentation; the universal Watchtower instance on the NAS updates the upstream image.
+
+## NAS Paths
+
+Current production paths:
+
+```text
+Compose path: /volume2/docker/calibreweb/docker-compose.yml
+Books:        /volume1/calibreweb/data/books
+Config:       /volume1/calibreweb/data/config
+```
+
+The book library and Calibre-Web config stay on the NAS. They are mounted into the container and must not be committed to Git.
+
+## Current Container
+
+```text
+Container: calibre-web
+Image:     lscr.io/linuxserver/calibre-web:latest
+Port:      8083 -> 8083
+TZ:        Europe/Berlin
+PUID:      1000
+PGID:      1000
+```
+
+## Deploy On NAS
+
+From the NAS:
+
+```sh
+cd /volume2/docker/calibreweb
+cp .env.example .env
+nano .env
+docker compose config
+docker compose up -d
+docker ps --filter "name=calibre-web" --format "table {{.Names}}\t{{.Image}}\t{{.Ports}}\t{{.Status}}"
+```
+
+## Watchtower
+
+The existing universal Watchtower service should remain responsible for updates. Do not create a second project-specific Watchtower unless explicitly requested.
+
+Manual one-time check:
+
+```sh
+docker run --rm -v /var/run/docker.sock:/var/run/docker.sock -v /volume2/docker/watchtower/config.json:/config.json:ro containrrr/watchtower --run-once
+```
+
+## Notes
+
+- A wrong `/books` mount can make the library look empty even when the files still exist.
+- A wrong `/config` mount can make Calibre-Web start like a fresh install.
+- Always verify mounts before recreating the container.
+
+## Source Of Truth
+
+The committed `docker-compose.yml` was copied from the live NAS compose file at:
+
+```text
+/volume2/docker/calibreweb/docker-compose.yml
+```
+
+Only documentation and `.env.example` were added around it.

docker-compose.yml

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+services:
+
+  calibre-web:
+    image: lscr.io/linuxserver/calibre-web:latest
+    container_name: calibre-web
+    restart: unless-stopped
+
+    environment:
+      - PUID=${PUID:-1000}
+      - PGID=${PGID:-10}
+      - TZ=${TZ:-Europe/Berlin}
+
+    volumes:
+      - ${BOOKS_PATH:-/volume1/calibreweb/data/books}:/books
+      - ${CONFIG_PATH:-/volume1/calibreweb/data/config}:/config
+
+    ports:
+      - "${APP_PORT:-8083}:8083"