added Dockerfile for server

Author: tebben

Dockerfile

@@ -0,0 +1,38 @@
+# Stage 1: Build the Go application
+FROM golang:1.23.5-bookworm AS builder
+
+# Install necessary packages for building
+RUN apt update && apt install -y unzip
+
+# Install DuckDB
+RUN curl --fail --location --output duckdb_cli-linux-amd64.zip https://github.com/duckdb/duckdb/releases/download/v1.1.3/duckdb_cli-linux-amd64.zip && unzip duckdb_cli-linux-amd64.zip
+
+# Move the DuckDB binary to the /usr/local/bin directory
+RUN mv duckdb /usr/local/bin/duckdb
+
+# Set the working directory inside the container
+WORKDIR /app
+
+# Copy the source code
+COPY ./src .
+
+# Download dependencies
+RUN go mod download
+
+# Build the Go application for production
+RUN CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -ldflags "-s -w" -gcflags="-m" -o geocodeur main.go
+
+# Stage 2: Create the final lightweight image
+FROM debian:bookworm
+
+# Set the environment variables
+ENV GEOCODEUR_CONFIG_PATH="/config/geocodeur.conf"
+
+# Copy the Go binary from the builder stage
+COPY --from=builder /app/geocodeur /usr/local/bin/geocodeur
+
+# Default port but geocodeur.conf can override it
+EXPOSE 8080
+
+# Command to run the server
+CMD ["geocodeur", "server"]