diff --git a/admin-web/Dockerfile b/admin-web/Dockerfile
index a5620f3..2524a72 100644
--- a/admin-web/Dockerfile
+++ b/admin-web/Dockerfile
@@ -1,7 +1,8 @@
+## syntax=docker/dockerfile:1.4
 FROM node:22-alpine AS builder
 WORKDIR /app
 COPY package.json ./
-RUN npm install
+RUN --network=host npm install
 COPY . .
 RUN npm run build
 
diff --git a/backend/Dockerfile b/backend/Dockerfile
index 7c6f9f7..b99d74d 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -1,10 +1,11 @@
+## syntax=docker/dockerfile:1.4
 FROM golang:1.23-alpine AS builder
 WORKDIR /src
 COPY go.mod ./
 COPY go.sum* ./
 COPY . .
-RUN go mod tidy
-RUN go mod download
+RUN --network=host go mod tidy
+RUN --network=host go mod download
 RUN CGO_ENABLED=0 GOOS=linux go build -o /out/nexavpn-api ./cmd/api
 
 FROM alpine:3.21
diff --git a/deploy/gateway/Dockerfile b/deploy/gateway/Dockerfile
index c3e0393..4a5ca5c 100644
--- a/deploy/gateway/Dockerfile
+++ b/deploy/gateway/Dockerfile
@@ -1,6 +1,7 @@
+## syntax=docker/dockerfile:1.4
 FROM alpine:3.21
 
-RUN set -eux; \
+RUN --network=host set -eux; \
     printf '%s\n' \
       'https://dl-cdn.alpinelinux.org/alpine/v3.21/main' \
       'https://dl-cdn.alpinelinux.org/alpine/v3.21/community' \