Create Dockerfile

Dockerfile

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+# Build stage using an official Go image.
+FROM golang:1.20 AS builder
+
+WORKDIR /app
+
+# Copy the source code and directories.
+COPY . .
+
+# Build the binary.
+RUN CGO_ENABLED=0 go build -o dynamic_dns_server .
+
+# Final minimal image.
+FROM alpine:latest
+
+WORKDIR /root/
+
+# Copy the binary and the ssl & webroot directories.
+COPY --from=builder /app/dynamic_dns_server .
+COPY --from=builder /app/ssl ./ssl
+COPY --from=builder /app/webroot ./webroot
+
+# Expose the port (default 443).
+EXPOSE 443
+
+ENTRYPOINT ["./dynamic_dns_server"]