diff --git a/docker/build.sh b/docker/build.sh
index 3a467b9f..1a3cf2b9 100755
--- a/docker/build.sh
+++ b/docker/build.sh
@@ -26,6 +26,7 @@ export GCC_ARM_PATH="gcc-arm-none-eabi-$GCC_ARM_VER"
 
 main() {
   local target="$1"
+  shift
 
   mkdir -p "$TOOLS_DIR"
 
@@ -35,7 +36,7 @@ main() {
 
   mkdir -p "$BUILD_DIR"
 
-  CmakeGenerate
+  CmakeGenerate "$@"
   CmakeBuild $target
   BUILD_RESULT=$?
   if [ "$DISABLE_POSTBUILD" != "true" -a "$BUILD_RESULT" == 0 ]; then
@@ -68,13 +69,16 @@ CmakeGenerate() {
     -DARM_NONE_EABI_TOOLCHAIN_PATH="$TOOLS_DIR/$GCC_ARM_PATH" \
     -DNRF5_SDK_PATH="$TOOLS_DIR/$NRF_SDK_VER" \
     -DBUILD_DFU=1 \
-    -DBUILD_RESOURCES=1
+    -DBUILD_RESOURCES=1 \
+    "$@"
 }
 
+# CmakeBuild [target [CMAKE_ARGS...]]
+# CMAKE_ARGS can include a '--' arg, with the same meaning as it has in 'cmake'.
 CmakeBuild() {
   local target="$1"
-  [ -n "$target" ] && target="--target $target"
-  cmake --build "$BUILD_DIR" --config $BUILD_TYPE $target -- -j$(nproc)
+  [ -n "$target" ] && target="--target $target" && shift
+  cmake --build "$BUILD_DIR" --config $BUILD_TYPE $target "$@" -- -j$(nproc)
   BUILD_RESULT=$?
   return $BUILD_RESULT
 }