feat: sync current progress (P0 hardening + P1 observability + deploy docs/systemd)

deploy/Dockerfile

@@ -0,0 +1,17 @@
+FROM golang:1.23-alpine AS builder
+WORKDIR /app
+COPY go.mod go.sum* ./
+RUN go mod download
+COPY . .
+RUN CGO_ENABLED=1 GOOS=linux go build -o asset-tracker ./cmd/server
+
+FROM alpine:3.20
+WORKDIR /app
+RUN apk add --no-cache ca-certificates
+COPY --from=builder /app/asset-tracker /app/asset-tracker
+COPY --from=builder /app/openapi.yaml /app/openapi.yaml
+COPY --from=builder /app/web/dist /app/web/dist
+COPY --from=builder /app/web/legacy /app/web/legacy
+RUN mkdir -p /app/data
+EXPOSE 9530
+CMD ["/app/asset-tracker"]