diff --git a/models/WRF/Makefile b/models/WRF/Makefile
index bafb67bb5f668f2f1f841c3e11139abe18eb4a37..949a6c94add0cccf9ef77566bbe99db9eb218a4d 100644
--- a/models/WRF/Makefile
+++ b/models/WRF/Makefile
@@ -7,6 +7,7 @@ sandbox:
 	@if [ ! -d ./sandbox.wrf.dev ]; then\
 		echo Building the WRF sandbox;\
 		make -C ../.. alma8.base;\
+		ln -fs ../../containers/alma8.base.sif .;\
 		sudo singularity build --sandbox sandbox.wrf.dev Singularity.sandbox.dev;\
 	fi
 	@[ -d ./sandbox.wrf.dev ] && echo Exists: WRF Sandbox || true
@@ -16,7 +17,7 @@ wrf.dev:
 	@if [ ! -f ./wrf.dev.sif ]; then\
 		echo Building the WRF dev;\
 		make -C ../.. alma8.base;\
-		ln -s ../../containers/alma8.base.sif .;\
+		ln -fs ../../containers/alma8.base.sif .;\
 		sudo singularity build wrf.dev.sif Singularity.dev;\
 	fi
 	@[ -f ./wrf.dev.sif ] && echo Exists: WRF dev || true
diff --git a/models/WRF/Singularity.dev b/models/WRF/Singularity.dev
index fe2ef87118ed6fed35a3dbc41ec0a82985697c77..0aa44f27e2657415a67f4687c44fd9f04da3a7ca 100644
--- a/models/WRF/Singularity.dev
+++ b/models/WRF/Singularity.dev
@@ -9,28 +9,32 @@ baseimage AlmaLinux8
 %apprun downloadwrf
 WRF_VERSION=4.4.1
 if [ $# -ne 0 ]; then
-        WRF_VERSION=1
+        WRF_VERSION=$1
 fi
 echo "[WRF.dev] Downloading WRF $WRF_VERSION from github:"
 curl -SL -o WRF-${WRF_VERSION}.tar.gz https://github.com/wrf-model/WRF/releases/download/v${WRF_VERSION}/v${WRF_VERSION}.tar.gz
 
 %apphelp downloadwrf
-This will download the WRF source code from GitHub. Use the Version as a commandline argument.
-curl -SL -o WRF-{WRF_VERSION}.tar.gz https://github.com/wrf-model/WRF/releases/download/v{WRF_VERSION}/v{WRF_VERSION}.tar.gz
-
+[WRF] APP: downloadwrf
+[WRF] This will download the WRF source code from GitHub. The version can be specified by an argument.
+[WRF] run: singularity run --app downloadwrf 4.4.1
+[WRF] curl -SL -o WRF-{WRF_VERSION}.tar.gz https://github.com/wrf-model/WRF/releases/download/v{WRF_VERSION}/v{WRF_VERSION}.tar.gz
+[WRF] 
 
 %apprun downloadwps
 WPS_VERSION=4.4
 if [ $# -ne 0 ]; then
-        WPS_VERSION=1
+        WPS_VERSION=$1
 fi
 echo "[WRF.dev] Downloading WPS $WPS_VERSION from github:"
 curl -SL -o WPS-${WPS_VERSION}.tar.gz https://github.com/wrf-model/WPS/archive/refs/tags/v${WPS_VERSION}.tar.gz
 
 %apphelp downloadwps
-This will download the WPS source code from GitHub. Use the Version as a commandline argument.
-curl -SL -o WPS-{WPS_VERSION}.tar.gz https://github.com/wrf-model/WPS/archive/refs/tags/v{WPS_VERSION}.tar.gz
-
+[WRF] APP: downloadwps
+[WRF] This will download the WPS source code from GitHub. The version can be specified by an argument.
+[WRF] run: singularity run --app downloadwps 4.4
+[WRF] curl -SL -o WPS-{WPS_VERSION}.tar.gz https://github.com/wrf-model/WPS/archive/refs/tags/v{WPS_VERSION}.tar.gz
+[WRF] 
 
 %post
 # Every line will be a layer in the container
@@ -56,7 +60,7 @@ yum update -y \
         libxml2 libxml2-devel perl-XML-LibXML ImageMagick \
         python3 python3-pip python3-devel \
         tar bash tcsh time which zlib zlib-devel \
-        git scl \
+        git \
         gnupg2 \
         hostname \
         iproute \
@@ -84,7 +88,6 @@ CNAME=wrf.dev
 echo "export PS1=\"[IMGW-$CNAME]\w\$ \"" >> /.singularity.d/env/99-zz-custom-env.sh
 # not sure why that does not happen as default
 echo "export PKG_CONFIG_PATH=/usr/lib64/openmpi/lib/pkgconfig/" >> $SINGULARITY_ENVIRONMENT
-# add App informaiton to runscript
 
 %environment
 export LD_LIBRARY_PATH=/usr/lib64/openmpi/lib:/usr/lib64:/lib64:/lib
diff --git a/models/WRF/Singularity.sandbox.dev b/models/WRF/Singularity.sandbox.dev
index f8d1b1fa5d82625669920f357d91997e81aa50c4..5c67239cccd1acef01e0d57bf928cc34cc2f0a70 100644
--- a/models/WRF/Singularity.sandbox.dev
+++ b/models/WRF/Singularity.sandbox.dev
@@ -1,5 +1,5 @@
 Bootstrap: localimage
-From: ../../containers/alma8.base.sif
+From: alma8.base.sif
 
 %labels
 maintainer IT-IMGW <it.img-wien@univie.ac.at>
diff --git a/models/WRF/Singularity.wrf b/models/WRF/Singularity.wrf
index b21f2cfe90d6983b5b5dbc9ac5977b4d7e6f363a..62f467ad2b8750391999b157e8b46b0175480d24 100644
--- a/models/WRF/Singularity.wrf
+++ b/models/WRF/Singularity.wrf
@@ -23,9 +23,9 @@ JASPERINC=/usr/include/jasper/
 JASPERLIB=/usr/lib64/
 NETCDF=/usr/lib64/openmpi/
 
-mkdir -vp /wrf/WRF /wrf/WPS
-cat /wrf/WRF*.tar.gz | tar --no-same-owner --strip-components=1 -zxC /wrf/WRF
-cat /wrf/WPS*.tar.gz | tar --no-same-owner --strip-components=1 -zxC /wrf/WPS
+mkdir -vp /wrf/WRF /wrf/WPS \
+    && cat /wrf/WRF*.tar.gz | tar --no-same-owner --strip-components=1 -zxC /wrf/WRF \
+    && cat /wrf/WPS*.tar.gz | tar --no-same-owner --strip-components=1 -zxC /wrf/WPS
 
 # Build WRF with Option 34 and 1
 cd /wrf/WRF \
@@ -74,8 +74,8 @@ Stage: final
 %post
     # compress
     gzip -f /wrf/*.log
-    # remove src tree (is insidie sandbox)
-    rm -rf /wrf/WRF /wrf/WPS
+    # remove src tree (is inside sandbox)
+    # rm -rf /wrf/WRF /wrf/WPS
     # Strip the binaries to reduce the size of the image
     find -L /wrf/* -type f -exec readlink -f '{}' \; | \
         xargs file -i | \
diff --git a/models/WRF/scripts/runscript b/models/WRF/scripts/runscript
index 0f733b6de047601e74ee107dba0fffdc505ae832..76d61f77a6403deef5f72663b30967dc852404d3 100644
--- a/models/WRF/scripts/runscript
+++ b/models/WRF/scripts/runscript
@@ -18,13 +18,18 @@ if [ $# -gt 0 ]; then
     exec "$@"
     echo "[WRF] Finished inside the container."
 else
+    # Look for apps?
+    if [ -d /scif/apps ]; then
+        echo "[WRF] Available Apps: $(ls /scif/apps)"
+        echo "[WRF] run: singularity run-help --app [] $SINGULARITY_NAME"
+    fi
     # interactive
-    echo "[WRF] Welcome inside an IMGW container!"
     echo "[WRF] Get help: singularity run-help $SINGULARITY_NAME"
     echo "[WRF] $WRF_VERSION, $WRF_BUILD_TARGET"
     echo "[WRF] $WRF_BUILD_TARGET -> /wrf/run"
     echo "[WRF] exe -> /wrf/bin"
-    echo "[WRF] Automatic copy of /wrf/run to current directory: ./$(basename $SINGULARITY_CONTAINER) init"
-    echo "[WRF] e.g. run real.exe from outside: ./$(basename $SINGULARITY_CONTAINER) real.exe"
+    echo "[WRF] Automatic copy of /wrf/run to current directory: ./$SINGULARITY_NAME init"
+    echo "[WRF] e.g. run real.exe from outside: ./$SINGULARITY_NAME real.exe"
+    echo "[WRF][INSIDE] Welcome inside an IMGW container!"
     exec /.singularity.d/actions/shell "$@"
 fi
\ No newline at end of file