Dockerfile: use --no-install-recommends in apt-get install (RPi-Distr…

…o#383)

Dockerfile

@@ -3,12 +3,12 @@ FROM i386/debian:buster
 ENV DEBIAN_FRONTEND noninteractive
 
 RUN apt-get -y update && \
-    apt-get -y install \
-	git vim parted \
-	quilt coreutils qemu-user-static debootstrap zerofree zip dosfstools \
-	bsdtar libcap2-bin rsync grep udev xz-utils curl xxd file kmod bc \
-	bison flex libssl-dev  build-essential libgtk-3-dev gcc-arm-linux-gnueabihf \
-	&& rm -rf /var/lib/apt/lists/*
+    apt-get -y install --no-install-recommends \
+        git vim parted \
+        quilt coreutils qemu-user-static debootstrap zerofree zip dosfstools \
+        bsdtar libcap2-bin rsync grep udev xz-utils curl xxd file kmod bc\
+        binfmt-support ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
 
 COPY . /pi-gen/