Use standalone launchers for snapshots

So that we don't have to copy ~/.ivy2/local in the images

scripts/install-kernels.sh

@@ -9,12 +9,16 @@ for SCALA_FULL_VERSION in ${SCALA_VERSIONS}; do
   # remove all dots for the kernel id
   SCALA_MAJOR_VERSION_TRIMMED=$(echo ${SCALA_MAJOR_VERSION} | tr -d .)
   echo Installing almond ${ALMOND_VERSION} for Scala ${SCALA_FULL_VERSION}
+  EXTRA_ARGS=()
+  if [[ ${ALMOND_VERSION} == *-SNAPSHOT ]]; then
+    EXTRA_ARGS+=('--standalone')
+  fi
   coursier bootstrap \
       -r jitpack \
       -i user -I user:sh.almond:scala-kernel-api_${SCALA_FULL_VERSION}:${ALMOND_VERSION} \
       sh.almond:scala-kernel_${SCALA_FULL_VERSION}:${ALMOND_VERSION} \
       --default=true --sources \
-      -o almond
+      -o almond ${EXTRA_ARGS[@]}
   ./almond --install --log info --metabrowse --id scala${SCALA_MAJOR_VERSION_TRIMMED} --display-name "Scala ${SCALA_MAJOR_VERSION}"
   rm -f almond
 done