searxng-docker/Caddyfile

{
	admin off

	log {
		output stderr
		format filter {
			# Preserves fist 8 bits from IPv4 and 32 bits from IPv6
			request>remote_ip ip_mask 8 32
			request>client_ip ip_mask 8 32

			# Remove identificable information
			request>remote_port delete
			request>headers delete
			request>uri query {
				delete url
				delete h
				delete q
			}
		}
	}
}

{$SEARXNG_HOSTNAME:http://localhost}

tls {$SEARXNG_TLS:internal}

@api {
	path /config
	path /healthz
	path /stats/errors
	path /stats/checker
}

@static {
	path /static/*
}

@imageproxy {
	path /image_proxy
}

header {
	# Force clients to use HTTPS
	Strict-Transport-Security "max-age=31536000"

	# Prevent MIME type sniffing from the declared Content-Type
	X-Content-Type-Options "nosniff"

	# Disable some browser features
	Permissions-Policy "accelerometer=(),ambient-light-sensor=(),autoplay=(),battery=(),camera=(),cross-origin-isolated=(),display-capture=(self),document-domain=(),encrypted-media=(),execution-while-not-rendered=(),execution-while-out-of-viewport=(),fullscreen=(self),geolocation=(),gyroscope=(),keyboard-map=(self),magnetometer=(),microphone=(),midi=(),navigation-override=(self),payment=(),picture-in-picture=(),publickey-credentials-get=(),screen-wake-lock=(),sync-xhr=(),usb=(),web-share=(),xr-spatial-tracking=()"

	# Set referrer policy
	Referrer-Policy "no-referrer"

	# X-Robots-Tag (comment to allow site indexing)
	X-Robots-Tag "noindex, noarchive, nofollow"

	# Remove "Server" header
	-Server
}

header @api {
	Access-Control-Allow-Methods "GET, OPTIONS"
	Access-Control-Allow-Origin "*"
}

route {
	# Caching
	header Cache-Control "no-cache, no-store"
	header @static Cache-Control "public, max-age=31536000"

	# CSP (https://content-security-policy.com)
	header Content-Security-Policy "upgrade-insecure-requests; default-src 'none'; script-src 'self'; style-src 'self' 'unsafe-inline'; form-action 'self' https://github.com/searxng/searxng/issues/new; font-src 'self'; frame-ancestors 'self'; base-uri 'self'; connect-src 'self' https://overpass-api.de; img-src 'self' data: https://*.tile.openstreetmap.org; frame-src https://www.youtube-nocookie.com https://player.vimeo.com https://www.dailymotion.com https://www.deezer.com https://www.mixcloud.com https://w.soundcloud.com https://embed.spotify.com"
	header @imageproxy Content-Security-Policy "default-src 'none'; img-src 'self' data:"
}

# SearXNG (uWSGI)
reverse_proxy localhost:8080 {
	header_up X-Forwarded-Port {http.request.port}
	header_up X-Real-IP {http.request.remote.host}

	# https://github.com/searx/searx-docker/issues/24
	header_up Connection "close"
}