[138] Fix some instructions for running Apptainer images

NDF-Poli-USP · Jan 22, 2025 · 2002609 · 2002609
1 parent c9edc2a
commit 2002609
Showing 1 changed file with 5 additions and 5 deletions.
diff --git a/apptainer/README.md b/apptainer/README.md
@@ -4,7 +4,7 @@ Apptainer is a container platform designed to run complex applications on HPC cl
 
 ### Installing Apptainer
 
-Apptainer may be installed with the following instructions (there are issues with previous versions in Ubuntu 24):
+Apptainer may be installed with the following instructions (there are issues with previous versions of Apptainer in Ubuntu 24):
 ````
 sudo apt update
 sudo apt install -y wget
@@ -15,12 +15,12 @@ sudo apt install -y ./apptainer_1.3.6_amd64.deb
 
 ### Building Apptainer images
 
-In spyro, the Apptainer image is based on the [Docker image](../docker/). Converting from Docker to Apptainer is more productive because Apptainer does not support image layers by design. Then, it is necessary to rerun all the instructions of the definition file when creating Apptainer images even when just one instruction is added for testing purposes.
+In spyro, the Apptainer image is based on the [Docker image](../docker/). Converting from Docker to Apptainer is more productive because Apptainer does not support image layers by design. Then, it is necessary to rerun all the instructions of the definition file when creating Apptainer images even when just one instruction is added (for example, for testing purposes).
 ````
 export IMAGE_ID=$(sudo docker images -q devtag:1.0)
 sudo docker save $IMAGE_ID -o devimg.tar
 sudo chown $USER:$USER devimg.tar
-apptainer build devimg.sif docker-archive://devimg.tar
+sudo apptainer build devimg.sif docker-archive://devimg.tar
 ````
 
 ### Running Apptainer images
@@ -32,10 +32,10 @@ apptainer overlay create --size 1024 /tmp/ext3_overlay.img
 
 To execute the image in interactive mode:
 ````
-apptainer shell --overlay overlay.img -e devimg.sif
+apptainer shell --overlay /tmp/ext3_overlay.img -e devimg.sif
 ````
 
 To execute the image in batch mode:
 ````
-apptainer run  --overlay overlay.img -e devimg.sif <script>
+apptainer run  --overlay /tmp/ext3_overlay.img -e devimg.sif <script>
 ````