diff --git a/definition-files/MPI/Singularity.miniconda3-py39-4.9.2-ubuntu-18.04-OMPI b/definition-files/MPI/Singularity.miniconda3-py39-4.9.2-ubuntu-18.04-OMPI
index f8557eda412382d992ba17cd277c396a71436af5..635e63d289e3d57654085169770a95d0f4021bdf 100644
--- a/definition-files/MPI/Singularity.miniconda3-py39-4.9.2-ubuntu-18.04-OMPI
+++ b/definition-files/MPI/Singularity.miniconda3-py39-4.9.2-ubuntu-18.04-OMPI
@@ -1,7 +1,5 @@
-# Bootstrap: library
-# From: mblaschek/imgw/ubuntu:18.04
-Bootstrap: localimage
-From: ubuntu.sif
+Bootstrap: library
+From: mblaschek/imgw/ubuntu:18.04
 
 %labels
 
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 a4cf49cb098e68a71fdb88bc41079f0b34b62d23..ace3a080e467892613ddac82a67137d9c796cd3e 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
@@ -1,7 +1,5 @@
 Bootstrap: library
 From: mblaschek/imgw/ubuntu:18.04
-# Bootstrap: localimage
-# From: ubuntu.sif
 
 %labels
 
diff --git a/workshop/Introduction-Advanced.pdf b/workshop/Introduction-Advanced.pdf
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diff --git a/workshop/Introduction.pdf b/workshop/Introduction.pdf
index f5a6b3ee2e29ad265aa40e7e096250a4376c6874..b34ad1c2d0624afa0ad3fdb7f8ee4108c8fa742a 100644
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