Merge branch 'dockcross-default-image'

linux-armv5/Dockerfile

@@ -28,5 +28,7 @@ ENV AS=/usr/bin/${CROSS_TRIPLE}-as \
 ENV QEMU_LD_PREFIX ${CROSS_ROOT}/libc
 ENV QEMU_SET_ENV "LD_LIBRARY_PATH=${CROSS_ROOT}/lib:${CROSS_ROOT}/libc/lib/${CROSS_TRIPLE}/"
 
+ENV DEFAULT_DOCKCROSS_IMAGE thewtex/cross-compiler-linux-armv5
+
 COPY Toolchain.cmake ${CROSS_ROOT}/
 ENV CMAKE_TOOLCHAIN_FILE ${CROSS_ROOT}/Toolchain.cmake