Trailing slashes removed in Dockerfile RUN command

[cdaringe]

Problem

in my file, Dockerfile.foo (which VSCode correctly identifies as Docker) slashes are incorrectly removed.

E.g.

RUN echo "${alpineHost}/ark/apk/published/alpine/${alpineVersion}/whatever/main" >/etc/apk/repositories && \
  some_other_cmd

gets formatted to:

RUN echo "${alpineHost}/ark/apk/published/alpine/${alpineVersion}/whatever/main" >/etc/apk/repositories &&
  some_other_cmd

Which is incorrect.

[cdaringe]

i now see this is shfmt behavior 🤔

[cdaringe]

dupe with #304