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infra:howto:apptainer_sample [2025/03/03 10:01] – remiinfra:howto:apptainer_sample [2025/03/03 10:24] (current) – remi
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 When you already have a Docker image for your job, you have several options to migrate to Apptainer : When you already have a Docker image for your job, you have several options to migrate to Apptainer :
  
-  * You can convert your image to an Apptainer .sif on your local laptop before uploading your .sif to the server :  +### From Dockerhub 
-  1. From local docker images : +If you have your image ready on DockerHub, then you can simply run from the server : 
-```bash +  ```bash 
-sudo apptainer build yourapplication.sif docker-daemon://yourapplication:latest +  apptainer build ./datasets/yourapplication.sif docker://yourapplication:latest 
- +       
-[sudo] password for user.name: +
 INFO:    Starting build... INFO:    Starting build...
-Copying blob 27123a71e85e done   |  +Copying blob 5a7813e071bf done   |  
-Copying config 388ea0fa6e done   | +Copying config a04dc4851c done   | 
 Writing manifest to image destination Writing manifest to image destination
-2025/03/03 10:43:58  info unpack layer: sha256:bec6fac0671f72331024c0537184f7213dd7940aa9f6bf20cb8a30bdb2e35b1d+2025/03/03 11:17:45  info unpack layer: sha256:5a7813e071bfadf18aaa6ca8318be4824a9b6297b3240f2cc84c1db6f4113040
 INFO:    Creating SIF file... INFO:    Creating SIF file...
-INFO:    Build complete: yourapplication.sif+INFO:    Build complete: ./datasets/yourapplication.sif
  
-scp yourapplication.sif user.name@chacha:/home/user.name/datasets/ +  ``` 
-```+ 
 +### From local image 
 +You can convert your image to an Apptainer .sif **on your local laptop** before uploading your .sif to the server : 
  
-  * You can build the .sif from a docker archive : +  1. From local docker images : 
-```bash+  ```bash 
 +  sudo apptainer build yourapplication.sif docker-daemon://yourapplication:latest 
 +   
 +  [sudo] password for user.name:  
 +  INFO:    Starting build... 
 +  Copying blob 27123a71e85e done   |  
 +  Copying config 388ea0fa6e done   |  
 +  Writing manifest to image destination 
 +  2025/03/03 10:43:58  info unpack layer: sha256:bec6fac0671f72331024c0537184f7213dd7940aa9f6bf20cb8a30bdb2e35b1d 
 +  INFO:    Creating SIF file... 
 +  INFO:    Build complete: yourapplication.sif 
 +   
 +  scp yourapplication.sif user.name@chacha:/home/user.name/datasets/ 
 +  ``` 
 +   
 +  2. You can also build the .sif from a docker archive : 
 +  ```bash
 sudo docker save yourapplication:latest -o yourapplication.tar sudo docker save yourapplication:latest -o yourapplication.tar
  
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 ``` ```
  
 +### From Dockerfile
 +
 +You can convert your Docker file to an Apptainer definition file using this conversion table : https://apptainer.org/docs/user/main/docker_and_oci.html#sec-deffile-vs-dockerfile
 +
 +TODO: Script a converter
  
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