Go dependency errors due to docker import

[yoongbok-lee]

Using Docker/v3 dependency in e2e tests is causing some dependency errors (if you try go get after go mo tidy on master it'll panic due to "can't find reason for import...`.

Since it seems like the error is from go mod and the fix is still WIP, we can remove the docker import and run the e2e tests in local nodes instead of docker containers to avoid the dependency error.