Prevent usages of `alpine` with a linter
Created by: slimsag
sourcegraph/alpine should be used everywhere, see https://github.com/sourcegraph/sourcegraph/pull/13234 and https://github.com/sourcegraph/sourcegraph/pull/13245 for why.
Created by: slimsag
sourcegraph/alpine should be used everywhere, see https://github.com/sourcegraph/sourcegraph/pull/13234 and https://github.com/sourcegraph/sourcegraph/pull/13245 for why.