Re-fix Dockerfile.tess4

[ci skip]

Dockerfile.tess4

@@ -8,16 +8,14 @@ USER root
 
 RUN add-apt-repository ppa:alex-p/tesseract-ocr
 
-RUN apt-get update && apt-get install -y --no-install-recommends \
-	tesseract-ocr-all
-
-RUN apt-get upgrade tesseract-ocr
+RUN apt-get update \
+	&& apt-get upgrade -y tesseract-ocr \
+	&& apt-get install -y --no-install-recommends tesseract-ocr-all
 
 RUN apt-get autoremove -y && apt-get clean -y
 
 USER docker
 
-
 # Must use array form of ENTRYPOINT
 # Non-array form does not append other arguments, because that is "intuitive"
 ENTRYPOINT ["/application/docker-wrapper.sh"]