fix: syntax error in go build command

[kaanyagci]

Building the Docker image with Dockerfile with docker build . was failing with the following error message:

 => ERROR [4/4] RUN go build -tags example -o /build/gocv_version -i ./cmd/version/                                                                                                                                                                                                                                                                                  0.3s
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 > [4/4] RUN go build -tags example -o /build/gocv_version -i ./cmd/version/:
0.308 flag provided but not defined: -i
0.308 usage: go build [-o output] [build flags] [packages]
0.308 Run 'go help build' for details.
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Dockerfile:10
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   8 |
   9 |     WORKDIR /go/src/gocv.io/x/gocv
  10 | >>> RUN go build -tags example -o /build/gocv_version -i ./cmd/version/
  11 |
  12 |     CMD ["/build/gocv_version"]
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ERROR: failed to solve: process "/bin/sh -c go build -tags example -o /build/gocv_version -i ./cmd/version/" did not complete successfully: exit code: 2

Removed the -i flag from go build as it's not defined