chore: Added GOOS=linux GOARCH=amd64 to Dockerfiles

[hbelmiro]

Description of your changes:
This PR adds GOOS=linux GOARCH=amd64 to Dockerfiles like done in

pipelines/backend/Dockerfile.driver

Line 20 in b3e75cf

RUN GO111MODULE=on CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -tags netgo -ldflags '-extldflags "-static"' -o /bin/driver ./backend/src/v2/cmd/driver/*.go

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[google-oss-prow]

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[hbelmiro]

cc @rimolive

[rimolive]

/rerun-all