Update alpine Docker tag to v3.19.1

Dockerfile

@@ -1,14 +1,14 @@
 FROM traefik:2.11.0 AS traefik
 
-FROM alpine:3.18.4 AS rathole
+FROM alpine:3.19.1 AS rathole
 RUN wget -O rathole.zip https://github.com/rapiz1/rathole/releases/download/v0.4.8/rathole-x86_64-unknown-linux-musl.zip && unzip rathole.zip
 
-FROM alpine:3.18.4 AS node_modules
+FROM alpine:3.19.1 AS node_modules
 RUN apk add nodejs npm
 COPY package.json package-lock.json ./
 RUN npm install --no-audit --no-progress --omit=dev
 
-FROM alpine:3.18.4
+FROM alpine:3.19.1
 RUN apk add nodejs npm
 COPY --from=node_modules /node_modules /node_modules
 COPY --from=traefik /usr/local/bin/traefik /usr/local/bin/traefik