#!/bin/sh
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set -e ${DEBUG:+-x}
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NGINX_CONFIG=$OPT_DIR/nginx/nginx.conf
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echo >&3 "=> Copy nginx config file..."
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mkdir -p "$OPT_DIR/nginx"
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\cp -f /etc/nginx/nginx.conf $NGINX_CONFIG
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echo >&3 "=> Configure system resolver..."
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# Process each nameserver individually, wrapping only valid IPv6 addresses in square brackets.
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# This regex accepts only hex digits and colons so that IPv4 addresses with :port are not captured.
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nameservers=$(awk '$1=="nameserver" {
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ns = $2;
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# Capture only IPv6 addresses (they contain a colon and no dot)
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if (ns ~ /^[0-9a-fA-F:]+$/ && ns ~ /:/ && ns !~ /\./) {
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printf "[%s] ", ns;
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} else {
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# IPv4 addresses
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printf "%s ", ns;
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}
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}' /etc/resolv.conf)
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echo "resolver $nameservers;" > $OPT_DIR/nginx/resolv.conf
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# Configure nginx error logging
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echo >&3 "=> Configuring nginx error logging..."
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NGINX_ERROR_LOG_LEVEL=${NGINX_ERROR_LOG_LEVEL:-warn}
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# Validate log level
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case "$NGINX_ERROR_LOG_LEVEL" in
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debug|info|notice|warn|error|crit|alert|emerg)
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echo >&3 "=> Setting error log level to: $NGINX_ERROR_LOG_LEVEL"
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;;
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*)
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echo >&3 "=> Warning: Invalid log level '$NGINX_ERROR_LOG_LEVEL', using 'warn' as default"
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NGINX_ERROR_LOG_LEVEL=warn
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;;
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esac
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sed -i "s|error_log /dev/stderr info;|error_log /dev/stderr $NGINX_ERROR_LOG_LEVEL;|g" $NGINX_CONFIG
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if [ -n "${NGINX_SSL_CERT:-}" ]; then
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echo >&3 "=> Replacing nginx certs..."
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sed -i "s|^\(\s*\)#\(listen 8086.*\)$|\1\2|g" $NGINX_CONFIG
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sed -i "s|^\(\s*\)#\(ssl_certificate .*\)@cert@;$|\1\2$NGINX_SSL_CERT;|g" $NGINX_CONFIG
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sed -i "s|^\(\s*\)#\(ssl_certificate_key .*\)@certkey@;$|\1\2$NGINX_SSL_CERT_KEY;|g" $NGINX_CONFIG
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echo >&3 "=> Successfully replaced nginx certs."
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else
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echo >&3 "=> Skipping replace nginx certs."
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fi
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if [ -n "${APP_HOST:-}" ]; then
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echo >&3 "=> Replacing app endpoint..."
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sed -i "s|localhost|${APP_HOST:-}|g" $NGINX_CONFIG
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echo >&3 "=> Successfully replaced app endpoint."
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else
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echo >&3 "=> Skipping replace app endpoint."
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fi
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LABEL_STUDIO_HOST_NO_SCHEME=${LABEL_STUDIO_HOST#*//}
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LABEL_STUDIO_HOST_NO_TRAILING_SLASH=${LABEL_STUDIO_HOST_NO_SCHEME%/}
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LABEL_STUDIO_HOST_SUBPATH=$(echo "$LABEL_STUDIO_HOST_NO_TRAILING_SLASH" | cut -d'/' -f2- -s)
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if [ -n "${LABEL_STUDIO_HOST_SUBPATH:-}" ] && [ -w $NGINX_CONFIG ]; then
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echo >&3 "=> Adding subpath to nginx config $NGINX_CONFIG ..."
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sed -i "s|^\(\s*\)\(location \/\)|\1\2$LABEL_STUDIO_HOST_SUBPATH\/|g" $NGINX_CONFIG
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echo >&3 "=> Successfully added subpath to nginx config."
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else
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echo >&3 "=> Skipping adding subpath to nginx config."
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fi
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