Change: prefer IPv4 in docker image (#4954)

Dockerfile

@@ -56,12 +56,12 @@ COPY --link --chmod=755 docker-entrypoint.sh /usr/local/bin/
 
 RUN apk add --no-cache su-exec
 
-ENV HOSTNAME=::
+ENV HOSTNAME=0.0.0.0
 ENV PORT=3000
 EXPOSE $PORT
 
 HEALTHCHECK --interval=10s --timeout=3s --start-period=20s \
-  CMD wget --no-verbose --tries=1 --spider --no-check-certificate http://localhost:$PORT/api/healthcheck || exit 1
+  CMD wget --no-verbose --tries=1 --spider --no-check-certificate http://127.0.0.1:$PORT/api/healthcheck || exit 1
 
 ENTRYPOINT ["docker-entrypoint.sh"]
 CMD ["node", "server.js"]

src/middleware.js

@@ -4,7 +4,7 @@ export function middleware(req) {
   // Check the Host header, if HOMEPAGE_ALLOWED_HOSTS is set
   const host = req.headers.get("host");
   const port = process.env.PORT || 3000;
-  let allowedHosts = [`localhost:${port}`];
+  let allowedHosts = [`localhost:${port}`, `127.0.0.1:${port}`];
   if (process.env.HOMEPAGE_ALLOWED_HOSTS) {
     allowedHosts = allowedHosts.concat(process.env.HOMEPAGE_ALLOWED_HOSTS.split(","));
   }