Add dockerfile

Dockerfile

@@ -0,0 +1,49 @@
+# Build args
+ARG PORT=8080
+ARG GLEAM_VERSION=v1.11.1
+
+# Build stage - compile the application
+FROM ghcr.io/gleam-lang/gleam:${GLEAM_VERSION}-erlang-alpine AS builder
+
+# Add project code
+COPY ./common /build/common
+COPY ./client /build/client
+COPY ./server /build/server
+
+# Install dependencies for all projects
+RUN cd /build/common && gleam deps download
+RUN cd /build/client && gleam deps download
+RUN cd /build/server && gleam deps download
+
+# Compile the client code and output to server's static directory
+RUN cd /build/client \
+  && gleam add --dev lustre_dev_tools \
+  && gleam run -m lustre/dev build app --minify --outdir=/build/server/priv/static
+
+# Compile the server code
+RUN cd /build/server \
+  && gleam export erlang-shipment
+
+# Runtime stage - slim image with only what's needed to run
+FROM ghcr.io/gleam-lang/gleam:${GLEAM_VERSION}-erlang-alpine
+
+# Copy the compiled server code from the builder stage
+COPY --from=builder /build/server/build/erlang-shipment /app
+
+# Set up the entrypoint
+WORKDIR /app
+RUN echo '#!/bin/sh\nexec ./entrypoint.sh "$@"' > /app/start.sh \
+  && chmod +x /app/start.sh
+
+# Add volume for accessing geofeed from host
+VOLUME /data
+
+# Set environment variables
+ENV GEOFEED_PATH=/data/geofeed.csv
+ENV PORT=${PORT}
+
+# Expose the port the server will run on
+EXPOSE ${PORT}
+
+# Run the server
+CMD ["/app/start.sh", "run"]