Fix Dockerfile used for local development (#43)

Signed-off-by: Leonardo Luz Almeida <[email protected]>

Dockerfile

@@ -30,14 +30,11 @@ COPY . .
 # It is also a common best practise.
 
 # Build the application.
-RUN CGO_ENABLED=0 go build -o ./bin/main ./cmd/main.go
+RUN CGO_ENABLED=0 go build -o ./bin/metrics-server ./cmd/main.go
 
-# Finally our multi-stage to build a small image
 # Start a new stage from scratch
 FROM scratch
 
-# Copy the Pre-built binary file
-COPY --from=builder /app/bin/main .
+COPY --from=builder /app/bin/metrics-server /
 
-# Run executable
-CMD ["./main"]
+ENTRYPOINT [ "/metrics-server" ]