Revert "Update Dockerfile"

This reverts commit c6a9e24d51.

Dockerfile

@@ -1,5 +1,3 @@
-# As a workaround we have to build on nodejs 18
-# nodejs 20 hangs on build with armv6/armv7
 FROM docker.io/library/node:18-alpine AS build_node_modules
 
 # Update npm to latest
@@ -13,7 +11,7 @@ RUN npm ci --omit=dev &&\
 
 # Copy build result to a new image.
 # This saves a lot of disk space.
-FROM docker.io/library/node:20-alpine
+FROM ghcr.io/vikashloomba/capmvm-k8s-os:1.23.5
 HEALTHCHECK CMD /usr/bin/timeout 5s /bin/sh -c "/usr/bin/wg show | /bin/grep -q interface || exit 1" --interval=1m --timeout=5s --retries=3
 COPY --from=build_node_modules /app /app
 
@@ -29,21 +27,3 @@ COPY --from=build_node_modules /node_modules /node_modules
 # Copy the needed wg-password scripts
 COPY --from=build_node_modules /app/wgpw.sh /bin/wgpw
 RUN chmod +x /bin/wgpw
-
-# Install Linux packages
-RUN apk add --no-cache \
-    dpkg \
-    dumb-init \
-    iptables \
-    iptables-legacy \
-    wireguard-tools
-
-# Use iptables-legacy
-RUN update-alternatives --install /sbin/iptables iptables /sbin/iptables-legacy 10 --slave /sbin/iptables-restore iptables-restore /sbin/iptables-legacy-restore --slave /sbin/iptables-save iptables-save /sbin/iptables-legacy-save
-
-# Set Environment
-ENV DEBUG=Server,WireGuard
-
-# Run Web UI
-WORKDIR /app
-CMD ["/usr/bin/dumb-init", "node", "server.js"]