Created Caddy 2.x with Cloudflare DNS (markdown)

Caddy-2.x-with-Cloudflare-DNS.md

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+Dockerfile (Caddy Builder)
+
+```nginx
+FROM caddy:builder AS builder
+RUN xcaddy build --with github.com/caddy-dns/cloudflare
+
+FROM caddy:latest
+COPY --from=builder /usr/bin/caddy /usr/bin/caddy
+```
+
+build command
+
+```bash
+docker build -t [YOUR-NAME]/caddycfdns .
+```
+
+Caddyfile (as reverse proxy)
+```nginx
+https://[YOUR-DOMAIN]:443 {
+
+  tls {
+        dns cloudflare [API-KEY]
+  }
+
+  encode gzip
+
+  header / {
+       # Enable HTTP Strict Transport Security (HSTS)
+       Strict-Transport-Security "max-age=31536000;"
+       # Enable cross-site filter (XSS) and tell browser to block detected attacks
+       X-XSS-Protection "1; mode=block"
+       # Disallow the site to be rendered within a frame (clickjacking protection)
+       X-Frame-Options "DENY"
+       # Prevent search engines from indexing (optional)
+       X-Robots-Tag "none"
+       # Server name removing
+       -Server
+   }
+  # The negotiation endpoint is also proxied to Rocket
+  reverse_proxy /notifications/hub/negotiate bitwarden:80
+
+  # Notifications redirected to the websockets server
+  reverse_proxy /notifications/hub bitwarden:3012
+
+  # Proxy the Root directory to Rocket
+  reverse_proxy bitwarden:80 {
+       # Send the true remote IP to Rocket, so that bitwarden_rs can put this in the
+       # log, so that fail2ban can ban the correct IP.
+       header_up X-Real-IP {remote_host}
+  }
+}
+```
+
+docker-compose.yml
+
+```nginx
+version: '3'
+
+services:
+  bitwarden:
+    image: bitwardenrs/server
+    restart: always
+    volumes:
+      - $PWD/bw-data:/data
+    environment:
+      WEBSOCKET_ENABLED: 'true' # Required to use websockets
+      SIGNUPS_ALLOWED: 'false'   # set to false to disable signups
+      DOMAIN: 'https://[DOMAIN]'
+      SMTP_HOST: '[MAIL-SERVER]'
+      SMTP_FROM: '[E-MAIL]'
+      SMTP_PORT: '587'
+      SMTP_SSL: 'true'
+      SMTP_USERNAME: '[E-MAIL]'
+      SMTP_PASSWORD: '[SMTP-PASS]'
+#      ADMIN_TOKEN: '[RAND. GENERATE]'
+#      YUBICO_CLIENT_ID: '[OPTIONAL]'
+#      YUBICO_SECRET_KEY: '[OPTIONAL]'
+
+  caddy:
+    image: [YOUR-NAME]/caddycfdns
+    restart: always
+    volumes:
+      - $PWD/Caddyfile:/etc/caddy/Caddyfile
+      - caddy_data:/data
+      - caddy_config:/config
+      - caddy_log:/logs
+    ports:
+      - [PRIVATE-IP]:443:443
+    environment:
+      ACME_AGREE: 'true'
+      CLOUDFLARE_EMAIL: '[YOUR-EMAIL]'
+      CLOUDFLARE_API_TOKEN: '[YOUR-TOKEN]'
+      DOMAIN: '[DOMAIN]'
+
+volumes:
+  caddy_data:
+  caddy_config:
+  caddy_log:
+```