message: Add rustfmt to image
diff: @@ -19,9 +19,11 @@ RUN set -eux; \
  ./rustup-init -y --no-modify-path --default-toolchain "$RUST_VERSION"; \
  rm -f rustup-init; \
  chmod -R a+w $RUSTUP_HOME $CARGO_HOME; \
  + rustup component add rustfmt; \
  rustup --version; \
  cargo --version; \
  - rustc --version
  + rustc --version; \
  + rustfmt --version
  ENV USER neqo
  ENV LOGNAME $USER
  