feat: containerize agent

agent.Dockerfile

@@ -0,0 +1,15 @@
+FROM golang:1.23 AS builder
+WORKDIR /app
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY agent/ ./agent
+RUN CGO_ENABLED=0 GOOS=linux go build \
+	-trimpath \
+	-ldflags "-s -w" \
+	-o /app/hp_agent ./agent/cmd/hp_agent
+
+FROM scratch
+COPY --from=builder /app/hp_agent /hp_agent
+ENTRYPOINT ["/hp_agent"]