First checkpoint

Dockerfile

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+FROM golang:1.26.1-alpine AS builder
+
+WORKDIR /app
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build -o /gis .
+
+FROM alpine:3.20
+
+RUN apk add --no-cache ca-certificates tzdata
+
+WORKDIR /app
+COPY --from=builder /gis .
+
+EXPOSE 8080
+
+ENTRYPOINT ["/app/gis"]
+CMD ["serve"]