added existing config

.gitmodules

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+[submodule "overleaf"]
+	path = overleaf
+	url = https://github.com/overleaf/overleaf.git

docker-compose.yaml

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+version: '3'
+services:
+    overleaf:
+        restart: always
+        # Server Pro users:
+        # image: quay.io/sharelatex/sharelatex-pro
+        image: hub.anxietyprime.de/sharelatex:v6
+        container_name: overleaf
+        depends_on:
+            mongo:
+                condition: service_healthy
+            redis-overleaf:
+                condition: service_started
+        links:
+            - mongo
+            - redis-overleaf
+        stop_grace_period: 60s
+        volumes:
+            - ./overleaf:/var/lib/overleaf
+            ########################################################################
+            ####  Server Pro: Uncomment the following line to mount the docker  ####
+            ####             socket, required for Sibling Containers to work    ####
+            ########################################################################
+            # - /var/run/docker.sock:/var/run/docker.sock
+        labels:
+          - "traefik.enable=true"
+          - "traefik.http.routers.overleaf.rule=Host(`tex.anxietyprime.de`)"
+          - "traefik.http.routers.overleaf.entrypoints=websecure"
+          - "traefik.http.routers.overleaf.tls.certresolver=letsencrypt"
+          - "traefik.http.services.overleaf.loadbalancer.server.port=80"
+          - "traefik.http.routers.overleaf.service=overleaf"
+
+        environment:
+
+            OVERLEAF_APP_NAME: Overleaf Dodo Edition
+
+            OVERLEAF_MONGO_URL: mongodb://mongo:27017/sharelatex
+
+            # Same property, unfortunately with different names in
+            # different locations
+            OVERLEAF_REDIS_HOST: redis-overleaf
+            REDIS_HOST: redis-overleaf
+
+            ENABLED_LINKED_FILE_TYPES: 'project_file,project_output_file'
+
+            # Enables Thumbnail generation using ImageMagick
+            ENABLE_CONVERSIONS: 'true'
+
+            # Disables email confirmation requirement
+            EMAIL_CONFIRMATION_DISABLED: 'true'
+
+            # temporary fix for LuaLaTex compiles
+            # see https://github.com/overleaf/overleaf/issues/695
+            TEXMFVAR: /var/lib/overleaf/tmp/texmf-var
+
+            ## Set for SSL via nginx-proxy
+            #VIRTUAL_HOST: 103.112.212.22
+
+            OVERLEAF_SITE_URL: https://tex.anxietyprime.de
+            # OVERLEAF_NAV_TITLE: Overleaf Community Edition
+            # OVERLEAF_HEADER_IMAGE_URL: http://example.com/mylogo.png
+            # OVERLEAF_ADMIN_EMAIL: support@it.com
+
+            # OVERLEAF_LEFT_FOOTER: '[{"text": "Another page I want to link to can be found <a href=\"here\">here</a>"} ]'
+            # OVERLEAF_RIGHT_FOOTER: '[{"text": "Hello I am on the Right"} ]'
+
+            # OVERLEAF_EMAIL_FROM_ADDRESS: "hello@example.com"
+
+            # OVERLEAF_EMAIL_AWS_SES_ACCESS_KEY_ID:
+            # OVERLEAF_EMAIL_AWS_SES_SECRET_KEY:
+
+            # OVERLEAF_EMAIL_SMTP_HOST: smtp.example.com
+            # OVERLEAF_EMAIL_SMTP_PORT: 587
+            # OVERLEAF_EMAIL_SMTP_SECURE: false
+            # OVERLEAF_EMAIL_SMTP_USER:
+            # OVERLEAF_EMAIL_SMTP_PASS:
+            # OVERLEAF_EMAIL_SMTP_TLS_REJECT_UNAUTH: true
+            # OVERLEAF_EMAIL_SMTP_IGNORE_TLS: false
+            # OVERLEAF_EMAIL_SMTP_NAME: '127.0.0.1'
+            # OVERLEAF_EMAIL_SMTP_LOGGER: true
+            # OVERLEAF_CUSTOM_EMAIL_FOOTER: "This system is run by department x"
+
+            # ENABLE_CRON_RESOURCE_DELETION: true
+
+            ################
+            ## Server Pro ##
+            ################
+
+            # SANDBOXED_COMPILES: 'true'
+
+            # SANDBOXED_COMPILES_SIBLING_CONTAINERS: 'true'
+            # SANDBOXED_COMPILES_HOST_DIR: '/var/sharelatex_data/data/compiles'
+        
+            # DOCKER_RUNNER: 'false'
+
+            ## Works with test LDAP server shown at bottom of docker compose
+            # OVERLEAF_LDAP_URL: 'ldap://ldap:389'
+            # OVERLEAF_LDAP_SEARCH_BASE: 'ou=people,dc=planetexpress,dc=com'
+            # OVERLEAF_LDAP_SEARCH_FILTER: '(uid={{username}})'
+            # OVERLEAF_LDAP_BIND_DN: 'cn=admin,dc=planetexpress,dc=com'
+            # OVERLEAF_LDAP_BIND_CREDENTIALS: 'GoodNewsEveryone'
+            # OVERLEAF_LDAP_EMAIL_ATT: 'mail'
+            # OVERLEAF_LDAP_NAME_ATT: 'cn'
+            # OVERLEAF_LDAP_LAST_NAME_ATT: 'sn'
+            # OVERLEAF_LDAP_UPDATE_USER_DETAILS_ON_LOGIN: 'true'
+
+            # OVERLEAF_TEMPLATES_USER_ID: "578773160210479700917ee5"
+            # OVERLEAF_NEW_PROJECT_TEMPLATE_LINKS: '[ {"name":"All Templates","url":"/templates/all"}]'
+
+
+            # OVERLEAF_PROXY_LEARN: "true"
+
+    mongo:
+        restart: always
+        image: mongo:6.0
+        container_name: mongo
+        volumes:
+            - ./mongo_data:/data/db
+            - ./mongodb-init-replica-set.js:/docker-entrypoint-initdb.d/mongodb-init-replica-set.js:ro
+        environment:
+          MONGO_INITDB_DATABASE: sharelatex
+        extra_hosts:
+          # Required when using the automatic database setup for initializing the replica set.
+          # This override is not needed when running the setup after starting up mongo.
+          - mongo:127.0.0.1
+        command: '--replSet overleaf' 
+        healthcheck:
+            test: echo 'db.runCommand("ping").ok' | mongosh localhost:27017/test --quiet
+            interval: 10s
+            timeout: 10s
+            retries: 5
+
+    redis-overleaf:
+        restart: always
+        image: redis:6.2
+        container_name: redis-overleaf
+        volumes:
+            - ./redis_data:/data
+
+networks:
+    default:
+        external:
+            name: traefik
+    overleaf:
+        external: false
+    mongo:
+        external: false
+    mongo-overleaf-init:
+        external: false
+    redis-overleaf:
+        external: false

mongodb-init-replica-set.js

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+rs.initiate({ _id: "overleaf", members: [ { _id: 0, host: "mongo:27017" } ] })

server-ce/Dockerfile

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+# ---------------------------------------------
+# Overleaf Community Edition (overleaf/overleaf)
+# ---------------------------------------------
+
+ARG OVERLEAF_BASE_TAG=sharelatex/sharelatex-base:latest
+FROM $OVERLEAF_BASE_TAG
+
+WORKDIR /overleaf
+
+# Add required source files
+# -------------------------
+ADD server-ce/genScript.js /overleaf/genScript.js
+ADD server-ce/services.js /overleaf/services.js
+ADD package.json package-lock.json /overleaf/
+ADD libraries/ /overleaf/libraries/
+ADD services/ /overleaf/services/
+ADD tools/migrations/ /overleaf/tools/migrations/
+
+# Add npm patches
+# -----------------------
+ADD patches/ /overleaf/patches
+
+# Install npm dependencies and build webpack assets
+# ------------------------
+RUN --mount=type=cache,target=/root/.cache \
+    --mount=type=cache,target=/root/.npm \
+    --mount=type=cache,target=/overleaf/services/web/node_modules/.cache,id=server-ce-webpack-cache \
+    --mount=type=tmpfs,target=/tmp true \
+&&  node genScript install | bash \
+&&  node genScript compile | bash
+
+# Copy runit service startup scripts to its location
+# --------------------------------------------------
+ADD server-ce/runit /etc/service
+
+# Copy runit global settings to its location
+# ------------------------------------------
+ADD server-ce/config/env.sh /etc/overleaf/env.sh
+
+# Configure nginx
+# ---------------
+ADD server-ce/nginx/nginx.conf.template /etc/nginx/templates/nginx.conf.template
+ADD server-ce/nginx/overleaf.conf /etc/nginx/sites-enabled/overleaf.conf
+ADD server-ce/nginx/clsi-nginx.conf /etc/nginx/sites-enabled/clsi-nginx.conf
+
+# Configure log rotation
+# ----------------------
+ADD server-ce/logrotate/overleaf /etc/logrotate.d/overleaf
+RUN chmod 644 /etc/logrotate.d/overleaf
+
+# Configure cron tasks
+# ----------------------
+ADD server-ce/cron /overleaf/cron
+ADD server-ce/config/crontab-history /etc/cron.d/crontab-history
+RUN chmod 600 /etc/cron.d/crontab-history
+ADD server-ce/config/crontab-deletion /etc/cron.d/crontab-deletion
+RUN chmod 600 /etc/cron.d/crontab-deletion
+
+# Copy Phusion Image startup and shutdown scripts to their locations
+# ------------------------------------------------------------------
+COPY server-ce/init_scripts/ /etc/my_init.d/
+COPY server-ce/init_preshutdown_scripts/ /etc/my_init.pre_shutdown.d/
+
+# Copy app settings files
+# -----------------------
+COPY server-ce/config/settings.js /etc/overleaf/settings.js
+
+# Copy history-v1 files
+# -----------------------
+COPY server-ce/config/production.json /overleaf/services/history-v1/config/production.json
+COPY server-ce/config/custom-environment-variables.json /overleaf/services/history-v1/config/custom-environment-variables.json
+
+# Copy grunt thin wrapper
+# -----------------------
+ADD server-ce/bin/grunt /usr/local/bin/grunt
+RUN chmod +x /usr/local/bin/grunt
+
+# Copy history helper scripts
+# ---------------------------
+ADD server-ce/bin/flush-history-queues /overleaf/bin/flush-history-queues
+RUN chmod +x /overleaf/bin/flush-history-queues
+ADD server-ce/bin/force-history-resyncs /overleaf/bin/force-history-resyncs
+RUN chmod +x /overleaf/bin/force-history-resyncs
+
+# Copy Latexmkrc
+# -----------------------
+COPY server-ce/config/latexmkrc /usr/local/share/latexmk/LatexMk
+
+# File that controls open|closed status of the site
+# -------------------------------------------------
+ENV SITE_MAINTENANCE_FILE="/etc/overleaf/site_status"
+RUN touch $SITE_MAINTENANCE_FILE
+
+# Set Environment Variables
+# --------------------------------
+ENV OVERLEAF_CONFIG=/etc/overleaf/settings.js
+
+ENV WEB_API_USER="overleaf"
+ENV ADMIN_PRIVILEGE_AVAILABLE="true"
+
+ENV OVERLEAF_APP_NAME="Overleaf Community Edition"
+
+ENV OPTIMISE_PDF="true"
+
+# Phusion Image timeouts before sending SIGKILL to processes
+# ----------------------------------------------------------
+ENV KILL_PROCESS_TIMEOUT=55
+ENV KILL_ALL_PROCESSES_TIMEOUT=55
+ENV GRACEFUL_SHUTDOWN_DELAY_SECONDS=1
+
+ENV NODE_ENV="production"
+ENV LOG_LEVEL="info"
+
+# Install all required TeX Live packages (sorted, no duplicates) and symlink biber
+RUN tlmgr install \
+    abstract \
+    acro \
+    adjustbox \
+    amsfonts \
+    amsmath \
+    babel \
+    babel-english \
+    babel-german \
+    beamer \
+    biblatex \
+    biblatex-iso690 \
+    biber \
+    booktabs \
+    caption \
+    cm-super \
+    cmap \
+    comment \
+    csquotes \
+    enumitem \
+    environ \
+    eurosym \
+    everyshi \
+    float \
+    floatbytocbasic \
+    glossaries \
+    graphics \
+    hyperxmp \
+    ifmtarg \
+    ifoddpage \
+    koma-script \
+    lastpage \
+    lipsum \
+    listings \
+    lscapeenhanced \
+    microtype \
+    multirow \
+    ncctools \
+    pdfpages \
+    pdflscape \
+    pgfplots \
+    pmboxdraw \
+    preprint \
+    scrhack \
+    setspace \
+    siunitx \
+    silence \
+    subfigure \
+    supertabular \
+    tabu \
+    textcase \
+    tikzpagenodes \
+    titling \
+    todonotes \
+    totpages \
+    translations \
+    ulem \
+    was \
+    xcolor \
+    xstring
+
+RUN ln -s /usr/local/texlive/2025/bin/aarch64-linux/biber /usr/local/bin/biber
+
+EXPOSE 80
+
+ENTRYPOINT ["/sbin/my_init"]