diff --git a/GRID/utils/getReproducerScript.sh b/GRID/utils/getReproducerScript.sh
new file mode 100755
index 000000000..6d3ab119b
--- /dev/null
+++ b/GRID/utils/getReproducerScript.sh
@@ -0,0 +1,80 @@
+#!/bin/bash
+ALIEN_PID=$1
+
+if [ ${JALIEN_TOKEN_CERT} ]; then
+  TOKENCERT=${JALIEN_TOKEN_CERT}
+  TOKENKEY=${JALIEN_TOKEN_KEY}
+else
+  if [ -f ${TMPDIR:-/tmp}/tokencert_`id -u`.pem ]; then
+    TOKENCERT=${TMPDIR:-/tmp}/tokencert_`id -u`.pem;
+  fi
+  if [ -f ${TMPDIR:-/tmp}/tokenkey_`id -u`.pem ]; then
+    TOKENKEY=${TMPDIR:-/tmp}/tokenkey_`id -u`.pem;
+  fi
+fi
+
+if [ ! ${TOKENCERT} ]; then
+  echo "This needs a tokencert and tokenkey file in the tmp folder"
+  exit 1
+fi
+
+SCRIPT=reproducer_script_${ALIEN_PID}.sh
+# talk to MonaLisa to fetch the script provided by Costin
+curl 'https://alimonitor.cern.ch/users/jobenv.jsp?pid='${ALIEN_PID}                                                                      \
+  -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36' \
+  --insecure --cert ${TOKENCERT} --key ${TOKENKEY} -o ${SCRIPT}
+
+# Define the Apptainer injection block which makes sure
+# that the job script is automatically executed in apptainer
+INJECTION='
+export ALIEN_PID=#ALIEN_PID#
+# Check if the script is running inside an Apptainer (Singularity) container
+if [ -z "$APPTAINER_NAME" ] && [ -z "$SINGULARITY_NAME" ]; then
+  # Relaunch this script inside the container
+
+  export WORKDIR=/tmp/foo-${ALIEN_PID}
+  if [ ! -d ${WORKDIR} ]; then
+    mkdir ${WORKDIR}
+  fi
+
+  # - copy the certificate token into /tmp/ inside the container
+  mkdir ${WORKDIR}/tmp
+  cp /tmp/token*pem ${WORKDIR}/tmp
+
+  # - copy the job script into workdir
+  cp $0 ${WORKDIR}
+
+  # detect architecture (ARM or X86)
+  ARCH=$(uname -i)
+  if [ "$ARCH" == "aarch64" ] || [ "$ARCH" == "x86_64" ]; then
+    echo "Detected hardware architecture : $ARCH"
+  else
+    echo "Invalid architecture ${ARCH} detected. Exiting"
+    exit 1
+  fi
+  if [ "$ARCH" == "aarch64" ]; then
+    ISAARCH64="1"
+  fi
+
+  CONTAINER="/cvmfs/alice.cern.ch/containers/fs/apptainer/compat_el9-${ARCH}"
+  APPTAINER_EXEC="/cvmfs/alice.cern.ch/containers/bin/apptainer/${ARCH}/current/bin/apptainer"
+
+  # we can actually analyse the local JDL to find the package and set it up for the container
+  ${APPTAINER_EXEC} exec -C -B /cvmfs:/cvmfs,${WORKDIR}:/workdir,${WORKDIR}/tmp:/tmp --pwd /workdir -C ${CONTAINER} "$0"
+  exit $?
+fi
+'
+
+# Inject the block after the first line (shebang)
+awk -v block="$INJECTION" 'NR==1 {print; print block; next} 1' "$SCRIPT" > tmpfile && mv tmpfile "$SCRIPT"
+
+# take out sandboxing structure
+sed -i "/echo \"Create a fresh sandbox at every attempt of running the job: alien-job-$ALIEN_PID\"/d" "$SCRIPT"
+sed -i "/rm -rf alien-job-$ALIEN_PID/d" "$SCRIPT"
+sed -i "/mkdir -p alien-job-$ALIEN_PID\/tmp/d" "$SCRIPT"
+sed -i "/cd alien-job-$ALIEN_PID/d" "$SCRIPT"
+
+# replace the PID
+sed -i "s/#ALIEN_PID#/${ALIEN_PID}/g" "$SCRIPT"
+
+chmod +x "${SCRIPT}"
diff --git a/GRID/utils/grid_submit.sh b/GRID/utils/grid_submit.sh
index ba4b2a843..a2ef4c125 100755
--- a/GRID/utils/grid_submit.sh
+++ b/GRID/utils/grid_submit.sh
@@ -370,7 +370,7 @@ EOF
   [ $ERROROUTPUTSPEC ] && echo "OutputErrorE = {"${ERROROUTPUTSPEC}"};" >> "${MY_JOBNAMEDATE}.jdl"   # add error output files
   [ $IMAGESPEC ] && echo "DebugTag = {\"${IMAGESPEC}\"};" >> "${MY_JOBNAMEDATE}.jdl"   # use special singularity image to run job
   # echo "Requirements = {"${REQUIREMENTSSPEC}"} >> "${MY_JOBNAMEDATE}.jdl"
-  [ $REQUIRESPEC ] && echo "Requirements = ${REQUIRESPEC}" >> "${MY_JOBNAMEDATE}.jdl"
+  [ "$REQUIRESPEC" ] && echo "Requirements = ${REQUIRESPEC}" >> "${MY_JOBNAMEDATE}.jdl"
 
 # "output_arch.zip:output/*@disk=2",
 # "checkpoint*.tar@disk=2"
@@ -383,6 +383,8 @@ EOF
     (
       # assemble all GRID interaction in a single script / transaction
       [ -f "${command_file}" ] && rm ${command_file}
+      echo "user ${MY_USER}" >> ${command_file}
+      echo "whoami" >> ${command_file}
       [ ! "${CONTINUE_WORKDIR}" ] && echo "rmdir ${MY_JOBWORKDIR}" >> ${command_file}    # remove existing job dir
       # echo "mkdir ${MY_BINDIR}" >> ${command_file}                      # create bindir
       echo "mkdir ${MY_JOBPREFIX}" >> ${command_file}                   # create job output prefix
@@ -434,7 +436,7 @@ EOF
       continue
     fi
     let counter=0 # reset counter
-    JOBSTATUS=$(alien.py ps -j ${MY_JOBID} | awk '//{print $4}')
+    JOBSTATUS=$(alien.py ps -j ${MY_JOBID} | awk '//{print $3}')
     # echo -ne "Waiting for jobs to return; Last status ${JOBSTATUS}"
 
     if [ "${JOBSTATUS}" == "D" ]; then
@@ -489,7 +491,24 @@ if [[ ${SINGULARITY} ]]; then
   # it's actually much like the GRID mode --> which is why we set JALIEN_TOKEN_CERT
   set -x
   cp $0 ${WORKDIR}
-  singularity exec -C -B /cvmfs:/cvmfs,${WORKDIR}:/workdir --env JALIEN_TOKEN_CERT="foo" --pwd /workdir /cvmfs/alice.cern.ch/containers/fs/singularity/centos7 $0 \
+
+  # detect architecture (ARM or X86)
+  ARCH=$(uname -i)
+  if [ "$ARCH" == "aarch64" ] || [ "$ARCH" == "x86_64" ]; then
+    echo "Detected hardware architecture : $ARCH"
+  else
+    echo "Invalid architecture ${ARCH} detected. Exiting"
+    exit 1
+  fi
+  if [ "$ARCH" == "aarch64" ]; then
+    ISAARCH64="1"
+  fi
+
+  CONTAINER="/cvmfs/alice.cern.ch/containers/fs/apptainer/compat_el9-${ARCH}"
+  APPTAINER_EXEC="/cvmfs/alice.cern.ch/containers/bin/apptainer/${ARCH}/current/bin/apptainer"
+
+  # we can actually analyse the local JDL to find the package and set it up for the container
+  ${APPTAINER_EXEC} exec -C -B /cvmfs:/cvmfs,${WORKDIR}:/workdir --pwd /workdir -C ${CONTAINER} /workdir/grid_submit.sh \
   ${CONTINUE_WORKDIR:+"-c ${CONTINUE_WORKDIR}"} --local ${O2TAG:+--o2tag ${O2TAG}} --ttl ${JOBTTL} --label ${JOBLABEL:-label} ${MATTERMOSTHOOK:+--mattermost ${MATTERMOSTHOOK}} ${CONTROLSERVER:+--controlserver ${CONTROLSERVER}}
   set +x
   exit $?
@@ -515,7 +534,6 @@ banner "Limits"
 ulimit -a
 
 banner "OS detection"
-lsb_release -a || true
 cat /etc/os-release || true
 cat /etc/redhat-release || true
 
diff --git a/MC/run/ANCHOR/anchorMC.sh b/MC/run/ANCHOR/anchorMC.sh
index e8170746a..20b210509 100755
--- a/MC/run/ANCHOR/anchorMC.sh
+++ b/MC/run/ANCHOR/anchorMC.sh
@@ -144,6 +144,13 @@ fi
 [ -z "${CYCLE}" ] && { echo_error "Set CYCLE" ; exit 1 ; }
 [ -z "${PRODSPLIT}" ] && { echo_error "Set PRODSPLIT" ; exit 1 ; }
 
+
+# this generates an exact reproducer script for this job
+# that can be used locally for debugging etc.
+if [[ -n "${ALIEN_PROC_ID}" && -n "${JALIEN_WSPORT}" ]]; then
+  ${O2DPG_ROOT}/GRID/utils/getReproducerScript.sh ${ALIEN_PROC_ID}
+fi
+
 # also for this keep a real default
 NWORKERS=${NWORKERS:-8}
 # set a default seed if not given
@@ -370,7 +377,7 @@ fi
 # full logs tar-ed for output, regardless the error code or validation - to catch also QC logs...
 #
 if [[ -n "$ALIEN_PROC_ID" ]]; then
-  find ./ \( -name "*.log*" -o -name "*mergerlog*" -o -name "*serverlog*" -o -name "*workerlog*" -o -name "pythia8.cfg" \) | tar -czvf debug_log_archive.tgz -T -
+  find ./ \( -name "*.log*" -o -name "*mergerlog*" -o -name "*serverlog*" -o -name "*workerlog*" -o -name "pythia8.cfg" -o -name "reproducer*.sh" \) | tar -czvf debug_log_archive.tgz -T -
   if [[ "$ALIEN_JDL_CREATE_TAR_IN_MC" == "1" ]]; then
     find ./ \( -name "*.log*" -o -name "*mergerlog*" -o -name "*serverlog*" -o -name "*workerlog*" -o -name "*.root" \) | tar -czvf debug_full_archive.tgz -T -
   fi