modified: Dockerfile

new file:   go.sum
add go.sum file in hadle mod

serv_golang_rest_api/Dockerfile

@@ -1,23 +1,14 @@
-# Use official Go image with specific version
-FROM golang:1.25.1
-
-# Set working directory
+# Build stage
+FROM golang:1.25.1 as builder
 WORKDIR /app
-
-# Copy Go module files first
 COPY go.mod go.sum ./
-
-# Download dependencies
 RUN go mod download
-
-# Copy source code
 COPY *.go ./
+RUN CGO_ENABLED=0 GOOS=linux go build -o /go/bin/app
 
-# Build the binary
-RUN CGO_ENABLED=0 GOOS=linux go build -o main .
-
-# Expose port
+# Final stage
+FROM gcr.io/distroless/static-debian12
+WORKDIR /
+COPY --from=builder /go/bin/app /app
+CMD ["/app"]
 EXPOSE 8080
-
-# Run the application
-CMD ["./main"]