Better handling of 3 images

Dockerfile

@@ -4,7 +4,7 @@ WORKDIR /app/
 ADD go.mod go.sum ./
 RUN go mod download
 ADD . .
-RUN GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -ldflags="-w -s" -o tweetsvg main.go
+RUN GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -ldflags="-w -s" -o tweetsvg .
 
 FROM scratch
 WORKDIR /app/