diff --git a/Dockerfile b/Dockerfile
index 328539f..7ff9c8f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,17 +10,17 @@ the image size as small as possible." \
     RELEASE=1 \
     ARCH=x86_64
 
-LABEL summary="$SUMMARY" \
-      description="$DESCRIPTION" \
-      io.k8s.description="$DESCRIPTION" \
+LABEL summary="${SUMMARY}" \
+      description="${DESCRIPTION}" \
+      io.k8s.description="${DESCRIPTION}" \
       io.k8s.display-name="s2i core" \
       io.openshift.s2i.scripts-url=image:///usr/libexec/s2i \
       io.s2i.scripts-url=image:///usr/libexec/s2i \
-      com.redhat.component="$NAME" \
-      name="$FGC/$NAME" \
-      version="$VERSION" \
-      release="$RELEASE.$DISTTAG" \
-      architecture="$ARCH" \
+      com.redhat.component="${NAME}" \
+      name="${FGC}/${NAME}" \
+      version="${VERSION}" \
+      release="${RELEASE}.${DISTTAG}" \
+      architecture="${ARCH}" \
       usage="This image is supposed to be used as a base image for other images that support source-to-image" \
       maintainer="SoftwareCollections.org <sclorg@redhat.com>"