add missing slash

Author: spowelljr

deploy/kicbase/Dockerfile

@@ -124,7 +124,7 @@ RUN sh -c "echo 'deb https://download.docker.com/linux/ubuntu focal stable' > /e
 # install buildkit
 RUN export ARCH=$(dpkg --print-architecture | sed 's/ppc64el/ppc64le/' | sed 's/armhf/arm-v7/') \
  && echo "Installing buildkit ..." \
-    && addgroup --system buildkit
+    && addgroup --system buildkit \
     && export BUILDKIT_BASE_URL="https://github.com/moby/buildkit/releases/download/${BUILDKIT_VERSION}" \
     && curl -sSL --retry 5 --output /tmp/buildkit.tgz "${BUILDKIT_BASE_URL}/buildkit-${BUILDKIT_VERSION}.linux-${ARCH}.tar.gz" \
     && tar -C /usr/local -xzvf /tmp/buildkit.tgz \