move application code into beszel folder

beszel/dockerfile_Agent

@@ -0,0 +1,20 @@
+FROM --platform=$BUILDPLATFORM golang:alpine AS builder
+
+WORKDIR /app
+
+# Download Go modules
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY *.go ./
+
+# Build
+ARG TARGETOS TARGETARCH
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags "-w -s" -o /agent .
+
+# ? -------------------------
+FROM scratch
+
+COPY --from=builder /agent /agent
+
+ENTRYPOINT ["/agent"]