initial commit

backend/backend.Dockerfile

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+# Multi-stage build for Go + Node.js Backend
+# Stage 1: Build Go binary
+FROM golang:1.24-alpine AS builder
+# Use latest stable go that works (docker tag might not have 1.25.6 yet, alpine is fine)
+# Since the go.mod says 1.25.6, we'll let it use the toolchain if 1.24 is the base, or we just rely on standard go compilation.
+RUN apk add --no-cache git make gcc musl-dev
+
+WORKDIR /src
+COPY protonvpn-wg-confgen/ ./
+ENV GOTOOLCHAIN=auto
+RUN go build -o /bin/protonvpn-wg-confgen cmd/protonvpn-wg/main.go
+
+# Stage 2: Node.js Backend Production setup
+FROM node:22-alpine
+WORKDIR /app
+
+# Install CA certs needed for Proton API calls
+RUN apk add --no-cache ca-certificates tzdata
+
+# Copy the compiled Go binary from Stage 1
+COPY --from=builder /bin/protonvpn-wg-confgen /usr/local/bin/protonvpn-wg-confgen
+
+# Setup the Node JS backend
+COPY backend/package.json ./
+RUN npm install
+COPY backend/ ./
+CMD ["npm", "run", "dev"]