feat: first version

Dockerfile

@@ -0,0 +1,15 @@
+FROM alpine:latest
+
+RUN apk add --no-cache \
+    iptables \
+    dnsmasq \
+    bind-tools \
+    curl \
+    bash \
+    iproute2
+
+COPY network-filter.sh /network-filter.sh
+
+EXPOSE 53/udp 53/tcp
+
+CMD ["/network-filter.sh"]