fix continuation lines

Dockerfile

@@ -6,8 +6,8 @@ ARG BUILD_DATE
 ARG VERSION
 LABEL build_version="Linuxserver.io version:- ${VERSION} Build-date:- ${BUILD_DATE}"
 
-# install build packages
 RUN \
+ echo "**** install build packages ****" && \
  apk add --no-cache --virtual=build-dependencies \
 	binutils-gold \
 	ghc \
@@ -17,22 +17,19 @@ RUN \
  apk add --no-cache --virtual=build-dependencies \
 	--repository http://nl.alpinelinux.org/alpine/edge/community \
 	cabal && \
-
-# compile shellcheck
+ echo "**** compile shellcheck ****" && \
  git clone https://github.com/koalaman/shellcheck /tmp/shellcheck && \
  cd /tmp/shellcheck && \
  cabal update && \
  cabal install && \
-
-# install shellcheck
+ echo "**** install shellcheck ****" && \
  cp /root/.cabal/bin/shellcheck /usr/local/bin/ && \
  ldd \
 	/root/.cabal/bin/shellcheck | grep "=> /" \
 	| awk '{print $3}' | xargs -I '{}' cp -v '{}'  \
 	/usr/local/lib/ && \
  ldconfig /usr/local/lib && \
-
-# cleanup
+ echo "**** cleanup ****" && \
  apk del --purge \
 	build-dependencies && \
 rm -rf \