rebase to alpine 3.8 and use repo version pylast

Dockerfile

@@ -1,4 +1,4 @@
-FROM lsiobase/alpine:3.7
+FROM lsiobase/alpine:3.8
 
 # set version label
 ARG BUILD_DATE
@@ -38,6 +38,7 @@ RUN \
 	openjpeg \
 	py2-gobject3 \
 	py2-pip \
+	py2-pylast \
 	python2 \
 	sqlite-libs \
 	tar \
@@ -73,7 +74,6 @@ RUN \
 	pillow \
 	pip \
 	pyacoustid \
-	pylast \
 	requests \
 	unidecode && \
  echo "**** cleanup ****" && \

README.md

@@ -87,6 +87,7 @@ Contains [beets-copyartifacts](https://github.com/sbarakat/beets-copyartifacts)
 
 ## Versions
 
++ **12.08.18:** Rebase to alpine 3.8, use alpine repo version of pylast.
 + **12.08.18:** Add requests pip package.
 + **04.03.18:** Upgrade mp3gain to 1.6.1.
 + **02.01.18:** Deprecate cpu_core routine lack of scaling.