Create jdk9cross directory before downloading JDK

JakubVanek · JakubVanek · commit 12228ae32166 · 2018-01-06T13:45:45.000+01:00
diff --git a/build/Dockerfile.scripts b/build/Dockerfile.scripts
@@ -1,7 +1,6 @@
 FROM ev3dev-lang-java:jdk9-system
 
 # copy build patches & scripts
-RUN mkdir /opt/jdkcross
 COPY *.patch *.sh /opt/jdkcross/
 RUN chmod +x /opt/jdkcross/*.sh
 
diff --git a/build/Dockerfile.system b/build/Dockerfile.system
@@ -50,6 +50,7 @@ RUN dpkg --add-architecture armel && \
         zlib1g-dev
 
 # download JDK 9
+RUN mkdir /opt/jdkcross
 RUN curl -SL http://download.java.net/java/GA/jdk9/9.0.1/binaries/openjdk-9.0.1_linux-x64_bin.tar.gz | tar -xzC /opt/jdkcross
 
 # prepare a nonroot user
