[docker] Change zip to pigz

JakubVanek · JakubVanek · commit 3453a0be3421 · 2018-03-28T00:06:16.000+02:00
diff --git a/build/Dockerfile.system b/build/Dockerfile.system
@@ -39,7 +39,7 @@ RUN dpkg --add-architecture armel && \
         cpio \
         gawk \
         file \
-        zip \
+        pigz \
         unzip \
         procps \
         autoconf \
