slimmed down the resulting image

Used debian:latest-slim and moved untaring to the builder container

Dockerfile

@@ -1,24 +1,22 @@
 FROM debian as builder
-LABEL version="0.3"
-
 RUN apt-get update && apt-get install gradle \
         default-jdk \
         git \
         tesseract-ocr -y
 
 RUN git clone https://github.com/Audiveris/audiveris.git && cd audiveris && gradle clean build -x test
+RUN mkdir /Audiveris && tar -xvf /audiveris/build/distributions/Audiveris.tar -C /Audiveris
 
 
-FROM debian
-COPY --from=builder /audiveris/build/distributions/Audiveris.tar .
+FROM debian:stable-slim
+COPY --from=builder /Audiveris/ /
 
-RUN apt-get update && apt-get install --no-install-recommends \
+RUN mkdir -p /usr/share/man/man1 && apt-get update && apt-get install --no-install-recommends \
         tesseract-ocr \
         tesseract-ocr-eng \
         tesseract-ocr-deu \
         tesseract-ocr-fra \
-        openjdk-8-jre-headless -y && tar -xvf Audiveris.tar && \
-        rm /etc/java-8-openjdk/accessibility.properties && \
-        rm Audiveris.tar
+        openjdk-8-jre-headless -y && \
+        rm /etc/java-8-openjdk/accessibility.properties
 
 CMD ["sh", "-c", "/Audiveris/bin/Audiveris -batch -export -output /output /input/*.pdf"]