First iteration of compose and .env file for vaultwarden.

vaultwarden/.env.template

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+COMPOSE_PROJECT_NAME=vaultwarden
+TOKEN="YOUR_TOKEN_HERE"
+EXPOSED_PORT=8080
+NDOMAIN="warden.domain.tld"
+VDOMAIN="https://warden.domain.tld"
+SFROM="mail@domain.tld"
+SFROMNAME="Your Name"
+SUSER="" # User login for Protonmail Bridge 
+SPASS="" # Password of the user (retrieved from inside the Protonmail Bridge container)

vaultwarden/docker-compose.yml

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+x-logging:
+  &default-logging
+  driver: local
+  options:
+    max-size: "1m"
+    max-file: "50"
+
+x-opt-values:
+  &volume-opt
+  driver_opts: &options
+    type: "nfs"
+    o: "addr=${IP},rw"
+
+services:
+  vaultwarden:
+    image: vaultwarden/server:latest
+    container_name: vaultwarden
+    restart: always
+    environment:
+      ADMIN_TOKEN: ${TOKEN} # Set token if you want the admin page available
+      ROCKET_PORT: ${EXPOSED_PORT}
+      VIRTUAL_PORT: ${EXPOSED_PORT} # Used by nginx-proxy
+      VIRTUAL_HOST: ${NDOMAIN} # Used by nginx-proxy
+      LETSENCRYPT_HOST: ${NDOMAIN}
+      DOMAIN: ${VDOMAIN} # Used by vaultwarden to set certain links
+      WEBSOCKET_ENABLED: "true"
+      SIGNUPS_ALLOWED: "false" # Change to true if it's the first time running
+      SMTP_HOST: "${protonmail-container-name}"
+      SMTP_FROM: ${SFROM}
+      SMTP_FROM_NAME: ${SFROMNAME}
+      SMTP_PORT: "25" # Default SMTP port for Protonmail Bridge
+      SMTP_USERNAME: ${SUSER}
+      SMTP_PASSWORD: ${SPASS}
+      SMTP_ACCEPT_INVALID_CERTS: "true" # Necessary when using Protonmail Bridge
+    volumes:
+      - vw-data:/data
+    networks:
+      - reverse-proxy
+      - vaultwarden
+      - protonmail
+
+volumes:
+  vw-data:
+    <<: *volume-opt
+    driver_opts:
+      <<: *options
+      device: ":/mnt/path/vaultwarden/vw-data"
+
+networks:
+  reverse-proxy:
+    name: rp_reverse-proxy
+    external: true
+  vaultwarden:
+  protonmail:
+    name: pmb_protonmail
+    external: true