fix

Dockerfile

@@ -34,13 +34,18 @@ RUN printf '#-------------------------------------------------------------------
 ARG BUILD_DEPS
 ARG BUILD_ARCH
 RUN export DEBIAN_FRONTEND=noninteractive && \
-    for ARCH in ${BUILD_ARCH} ; do dpkg --add-architecture ${ARCH} ; done && \
+    for ARCH in ${BUILD_ARCH} ; do \
+      dpkg --add-architecture ${ARCH} ; \
+    done && \
     apt-get -q  update && \
     apt-get -qy -o Dpkg::Use-Pty=0 upgrade && \
     apt-get -qy -o Dpkg::Use-Pty=0 install --no-install-recommends apt-utils && \
     apt-get -qy -o Dpkg::Use-Pty=0 install --no-install-recommends ${BUILD_DEPS} \
-        build-essential debhelper ca-certificates curl git iproute2 wget nano && \
-    for ARCH in ${BUILD_ARCH} ; do apt-get -qy -o Dpkg::Use-Pty=0 install --no-install-recommends crossbuild-essential-${ARCH} ; done && \
+        apt-utils build-essential debhelper ca-certificates curl git iproute2 wget nano && \
+    for ARCH in ${BUILD_ARCH} ; do \
+      apt-get -qy -o Dpkg::Use-Pty=0 install --no-install-recommends \
+        crossbuild-essential-${ARCH} $(printf "%s:${ARCH} " ${BUILD_DEPS}) ; \
+    done && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
 
 # Default command

drone.yml

@@ -40,7 +40,7 @@ steps:
     tags: [ latest, builder ]
     build_args: # custom args for docker build, e.g. additional BUILD_DEPS etc.
       - DEB_RELEASE=stretch
-      - BUILD_DEPS=libhidapi-dev libssl-dev zip
+      - BUILD_DEPS=libhidapi-dev libssl-dev
       - BUILD_ARCH=i386 amd64 armhf armel # amd64 arm64 armel armhf i386 mips mips64el mipsel powerpc ppc64el s390x