diff --git a/definition-files/micromamba/Singularity.conda-py39-dev-debian b/definition-files/micromamba/Singularity.conda-py39-dev-debian
new file mode 100644
index 0000000000000000000000000000000000000000..ab0dab5c5bcbe9c6116ac382435ceb50bed47be7
--- /dev/null
+++ b/definition-files/micromamba/Singularity.conda-py39-dev-debian
@@ -0,0 +1,26 @@
+Bootstrap: docker
+From: mambaorg/micromamba:latest
+
+%help
+    Micromamba conda environment with
+    Python 3.9.13 and the latest eccodes (binary+py)
+    https://pypi.org/project/eccodes/
+%labels
+    maintainer  M. Blaschek
+    mail michael.blaschek@univie.ac.at
+    date 7.10.2022
+    python 3.9.13
+    eccodes 2.27.0
+    gcc 9.5.0
+    gfortran 9.5.0
+%post
+    micromamba -q install -y -n base -c conda-forge eccodes=2.27.0 cdo nco netcdf4 hdf5 openmpi=4.0.5 gcc=9.5.0 gfortran=9.5.0 python=3.9.13 &&
+    /opt/conda/bin/pip install eccodes && /opt/conda/bin/pip cache purge &&
+    micromamba clean --all --yes
+%environment
+    LIBRARY=/opt/conda/lib
+    INCLUDE=/opt/conda/include
+    BIN=/opt/conda/bin
+    SHARE=/opt/conda/share
+%test
+    /opt/conda/bin/python3 -m eccodes selfcheck
diff --git a/definition-files/micromamba/Singularity.conda-py39-eccodes-debian b/definition-files/micromamba/Singularity.conda-py39-eccodes-debian
new file mode 100644
index 0000000000000000000000000000000000000000..76c11c173b001938a10b32c1cb6b8ce111082b44
--- /dev/null
+++ b/definition-files/micromamba/Singularity.conda-py39-eccodes-debian
@@ -0,0 +1,19 @@
+Bootstrap: docker
+From: mambaorg/micromamba:latest
+
+%help
+    Micromamba conda environment with
+    Python 3.9.13 and the latest eccodes (binary+py)
+    https://pypi.org/project/eccodes/
+%labels
+    maintainer  M. Blaschek
+    mail michael.blaschek@univie.ac.at
+    date 7.10.2022
+    python 3.9.13
+    eccodes 2.27.0
+%post
+    micromamba -q install -y -n base -c conda-forge eccodes=2.27.0 python=3.9.13 &&
+    /opt/conda/bin/pip install eccodes && /opt/conda/bin/pip cache purge &&
+    micromamba clean --all --yes
+%test
+    python -m eccodes selfcheck
diff --git a/definition-files/miniconda/Singularity.miniconda3-py39-4.9.2-ubuntu-18.04 b/definition-files/miniconda/Singularity.miniconda3-py39-4.9.2-ubuntu-18.04
index ace3a080e467892613ddac82a67137d9c796cd3e..ad4e4cbb3feefb74536be6b503398937da429c6e 100644
--- a/definition-files/miniconda/Singularity.miniconda3-py39-4.9.2-ubuntu-18.04
+++ b/definition-files/miniconda/Singularity.miniconda3-py39-4.9.2-ubuntu-18.04
@@ -1,5 +1,5 @@
-Bootstrap: library
-From: mblaschek/imgw/ubuntu:18.04
+Bootstrap: docker
+From: ubuntu:18.04
 
 %labels
 
@@ -10,7 +10,7 @@ From: mblaschek/imgw/ubuntu:18.04
     AUTHOR_NAME Michael Blaschek
     AUTHOR_EMAIL michael.blaschek@univie.ac.at
 
-    LAST_UPDATED 20211118
+    LAST_UPDATED 20220930
 
 %setup
 
@@ -45,7 +45,7 @@ From: mblaschek/imgw/ubuntu:18.04
     export DEBIAN_FRONTEND='noninteractive'
 
     # Upgrade all software packages to their latest versions
-    apt-get -y update && apt-get -y upgrade
+    apt-get -y update && apt-get -y upgrade && apt-get -y install wget locate
 
     cd /tmp
 
@@ -66,9 +66,11 @@ From: mblaschek/imgw/ubuntu:18.04
     wget "${CONDA_ROOT_URL}/${CONDA_DISTRIBUTION}/${CONDA_INSTALLER}"
     chmod +x "${CONDA_INSTALLER}"
     "./${CONDA_INSTALLER}" -b -p "${CONDA_INSTALL_DIR}"
-
+    # Now install some packages with conda
+    $CONDA_INSTALL_DIR/bin/conda install -y -c conda-forge ipython numpy xarray pandas hdf5
     # Remove conda installer
     rm "${CONDA_INSTALLER}"
+    $CONDA_INSTALL_DIR/bin/conda clean -a -y
 
     # Cleanup
     apt-get -y autoremove --purge
@@ -80,5 +82,6 @@ From: mblaschek/imgw/ubuntu:18.04
 %files
 
 %runscript
-
+    echo "Arguments received: $*"
+    exec "$@"
 %test