diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c9db163d6b95637012d72e42577828ef81ef1b9d..fc61f9857a6c59cbf6f5f0550ab895105b85040b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,11 @@
 stages:
   - clean
+  - build
   - run_tests
 
+variables:
+  PROJECT_BRANCH: $CI_COMMIT_REF_NAME
+
 clean-spack:
   stage: clean
   script:
@@ -17,6 +21,22 @@ clean-spack:
     - when: never
 
 
+build-only:
+  stage: build
+  script:
+    - ./examples/00_build_only.sh
+  tags:
+    - slurm.meteo.physik.lmu.de
+  variables:
+    SRUN_OPTIONS: "--time 04:00:00 --mem 18G -n 4 -c 2"
+
+  artifacts:
+    name: build-only-logs
+    when: always
+    paths:
+      - ./autosubmit/**/tmp
+    expire_in: 7 days
+
 
 real-from-ideal:
   stage: run_tests
@@ -62,6 +82,22 @@ real-from-dwd-ana:
   artifacts:
     name: real-from-dwd-ana-logs
     when: always
+    paths:
+      - ./autosubmit/**/tmp
+    expire_in: 7 days
+
+real-from-dwd-ana-B6:
+  stage: run_tests
+  script:
+    - ./examples/02_real-from-dwd-ana_B6.sh
+  tags:
+    - slurm.meteo.physik.lmu.de
+  variables:
+    SRUN_OPTIONS: "--time 04:00:00 --mem 64G -n 16 -c 2"
+
+  artifacts:
+    name: real-from-dwd-ana-B6-logs
+    when: always
     paths:
       - ./autosubmit/**/tmp
     expire_in: 7 days
\ No newline at end of file
diff --git a/conf/build_only.yml b/conf/build_only.yml
new file mode 100644
index 0000000000000000000000000000000000000000..da9eff21a5a49c4b9214e8f0cab59a9e5a20973e
--- /dev/null
+++ b/conf/build_only.yml
@@ -0,0 +1,5 @@
+DEFAULT:
+  CUSTOM_CONFIG:
+    PRE:
+      - "%PROJDIR%/conf/common"
+      - "%PROJDIR%/conf/build_only"
\ No newline at end of file
diff --git a/conf/common/build.yml b/conf/common/build.yml
index baa307ef9732bdbde1a063f797887183b4fba19d..0c5b556e04b839c83faa35503c5cf418cb4de830 100644
--- a/conf/common/build.yml
+++ b/conf/common/build.yml
@@ -2,7 +2,7 @@ spack:
   init: ""                                                # command to load spack environment, e.g. module load spack,
                                                           # use spack/setup-env.sh if empty
   url: https://github.com/spack/spack.git                 # url to download spack if necessary
-  branch: develop                                         # if downloaded, branch name to use
+  branch: v0.20.1                                          # if downloaded, branch name to use
   externals: ""                                           # list of packages we try to find with spack external find
                                                           # In LMU we need to include slurm to this list.
   compiler: "gcc@12.2.0"                                  # desired compiler for spack
diff --git a/conf/real-from-dwd-ana.yml b/conf/real-from-dwd-ana.yml
new file mode 100644
index 0000000000000000000000000000000000000000..0fb4a9be01160b6182f13a29dcd04bd8aba0ce76
--- /dev/null
+++ b/conf/real-from-dwd-ana.yml
@@ -0,0 +1,5 @@
+DEFAULT:
+  CUSTOM_CONFIG:
+    PRE:
+      - "%PROJDIR%/conf/common"
+      - "%PROJDIR%/conf/real-from-dwd-ana"
\ No newline at end of file
diff --git a/conf/real-from-ideal.yml b/conf/real-from-ideal.yml
new file mode 100644
index 0000000000000000000000000000000000000000..6a1e8b69b5b066a9d1820f4b6349b01c0c8ddbea
--- /dev/null
+++ b/conf/real-from-ideal.yml
@@ -0,0 +1,5 @@
+DEFAULT:
+  CUSTOM_CONFIG:
+    PRE:
+      - "%PROJDIR%/conf/common"
+      - "%PROJDIR%/conf/real-from-ideal"
\ No newline at end of file
diff --git a/examples/00_build_only.sh b/examples/00_build_only.sh
new file mode 100755
index 0000000000000000000000000000000000000000..320ef660fd37823df8c322bc5934b50337363cf1
--- /dev/null
+++ b/examples/00_build_only.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+#######################################################################################################################
+# Variables that are required to define the test case
+EXPID="bo000"
+ICON_CASE="build_only"
+ICON_VERSION="2.6.5-nwp0"
+PLATFORM="LOCAL"
+EXTRA_NAMELIST=""
+EXTRA_CONFIGURATION=""
+
+#######################################################################################################################
+set -euo pipefail
+
+# Get path to the script directory
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
+
+# Import the function run_autoicon_example
+source ${SCRIPT_DIR}/example_utils.sh
+
+# Setup and run the experiment
+run_autoicon_example "$EXPID" "$ICON_CASE" "$ICON_VERSION" "$PLATFORM" "${EXTRA_NAMELIST}" "${EXTRA_CONFIGURATION}"
diff --git a/examples/02_real-from-dwd-ana_B6.sh b/examples/02_real-from-dwd-ana_B6.sh
new file mode 100755
index 0000000000000000000000000000000000000000..23da15417a2162883fd33a8cbda8b2384d40081d
--- /dev/null
+++ b/examples/02_real-from-dwd-ana_B6.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+#######################################################################################################################
+# Variables that are required to define the test case
+EXPID="rfdaB6"
+ICON_CASE="real-from-dwd-ana"
+ICON_VERSION="w2w-B6"
+PLATFORM="LOCAL"
+EXTRA_NAMELIST=""
+EXTRA_CONFIGURATION=""
+
+#######################################################################################################################
+set -euo pipefail
+
+# Get path to the script directory
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
+
+# Import the function run_autoicon_example
+source ${SCRIPT_DIR}/example_utils.sh
+
+# Setup and run the experiment
+run_autoicon_example "$EXPID" "$ICON_CASE" "$ICON_VERSION" "$PLATFORM" "${EXTRA_NAMELIST}" "${EXTRA_CONFIGURATION}"
diff --git a/examples/example_utils.sh b/examples/example_utils.sh
index 491fba642fc050b4ddff0bba18b2b6dad07d0cbb..7aed35c3d410bec17adc70dda53942f87b8928b7 100644
--- a/examples/example_utils.sh
+++ b/examples/example_utils.sh
@@ -18,7 +18,9 @@ function run_autoicon_example() {
   configure_and_install_autosubmit
 
   # Set up project
-  setup_project "$EXPID"
+  EXPID=$( setup_project )
+
+  echo "NewEXPID=${EXPID}"
 
   # Create and run the experiment
   create_and_run_experiment "$EXPID"
@@ -27,7 +29,7 @@ function run_autoicon_example() {
 
 function setup_environment() {
   # Set Autosubmit version and define some directories
-  AUTOSUBMIT_VERSION="4.0.76"
+  AUTOSUBMIT_VERSION="4.0.79"
   # Define the path of the directory where this script is located
   SCRIPTDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
   # Define the root path of the project
@@ -66,49 +68,15 @@ function configure_and_install_autosubmit() {
 }
 
 function setup_project() {
-  local EXPID=$1
   PROJECT_ORIGIN="https://gitlab.physik.uni-muenchen.de/w2w/autoicon.git"
   : ${PROJECT_BRANCH:="master"}
 
   # If experiment directory doesn't exist, create it and set up the experiment
-  if [ ! -e autosubmit/$EXPID/ ]; then
-    mkdir -p autosubmit/$EXPID/
-    autosubmit expid -min -H lmu -d myiconsim -repo $PROJECT_ORIGIN -b $PROJECT_BRANCH &> >(tee autosubmit/$EXPID/log.autosubmit.expid)
-    AUTOID=$(grep Experiment autosubmit/$EXPID/log.autosubmit.expid | awk '{print $2}')
-    mv -v autosubmit/$AUTOID/* autosubmit/$EXPID
-    rmdir -v autosubmit/$AUTOID
-  fi
-
-  # Create and write the minimal config file
-  cat >autosubmit/$EXPID/conf/minimal.yml <<EOF
-ICON_CASE: "${ICON_CASE}"
-
-CONFIG:
-  AUTOSUBMIT_VERSION: "$AUTOSUBMIT_VERSION"
-  TOTALJOBS: 20
-  MAXWAITINGJOBS: 20
-  RETRIALS: 0
-DEFAULT:
-  EXPID: "$EXPID"
-  HPCARCH: "${PLATFORM}" # use LMU to run on cluster
-  CUSTOM_CONFIG:
-    PRE:
-      - "%PROJDIR%/conf/common"
-      - "%PROJDIR%/conf/%ICON_CASE%"
-
-PROJECT:
-  PROJECT_TYPE: "git"
-  PROJECT_DESTINATION: "autoicon"
-GIT:
-  PROJECT_ORIGIN: "$PROJECT_ORIGIN"
-  PROJECT_BRANCH: "$PROJECT_BRANCH"
-  PROJECT_COMMIT: ""
-  PROJECT_SUBMODULES: ""
-  FETCH_SINGLE_BRANCH: True
-EOF
+  autosubmit expid -min -H LOCAL -d myiconsim -repo $PROJECT_ORIGIN -b $PROJECT_BRANCH -conf "conf/${ICON_CASE}.yml" &> autosubmit/log.autosubmit.expid
+  EXPID=$(grep "Experiment.*created" autosubmit/log.autosubmit.expid | awk '{print $2}')
 
   # Create and write the additional config file
-  cat >autosubmit/${EXPID}/conf/01_myconf.yml <<EOF
+  cat > autosubmit/${EXPID}/conf/01_myconf.yml <<EOF
 spack:
   init: "" # command to load spack environment, e.g. module load spack, use spack/setup-env.sh if empty
   url: https://github.com/spack/spack.git # url to download spack if necessary
@@ -152,6 +120,7 @@ $EXTRA_NAMELIST
 EOF
   fi
 
+echo "${EXPID}"
 }
 
 function create_and_run_experiment() {
diff --git a/spack_repo/packages/dwd-icon-tools/package.py b/spack_repo/packages/dwd-icon-tools/package.py
index b0f92bb63aa5bc66e9082073d0b21eacea8552e4..ed7a8784a359cbbdeca2c291f1f5ce5bfb6a04ee 100644
--- a/spack_repo/packages/dwd-icon-tools/package.py
+++ b/spack_repo/packages/dwd-icon-tools/package.py
@@ -70,7 +70,7 @@ class DwdIconTools(Package):
                 "FCFLAGS": "-I/usr/include -stand f08 -O2 -g -fpp -qopenmp -check bounds -Wunused -DNOMPI",
                 "CFLAGS": "-std=gnu99 -O3 -DHAVE_LIBNETCDF -DHAVE_NETCDF4 -DHAVE_CF_INTERFACE -DHAVE_LIBGRIB "
                           "-DHAVE_LIBGRIB_API -DpgiFortran -D__ICON__ -DHAVE_CONFIG_H -traceback",
-                "LIBS": f"-leccodes -lgfortran -lhdf5 -lxml2",
+                "LIBS": f"-leccodes -lhdf5 -lxml2",
                 "V": "1",
                 "VERBOSE": "1",
                 "LDFLAGS": "-Wl,--copy-dt-needed-entries",