Add options to README.md

Author: ocaisa

README.md

@@ -41,6 +41,8 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - uses: eessi/github-action-eessi@v3
+      with:
+        eessi_stack_version: '2025.06'
     - name: Test EESSI
       run: |
         module avail
@@ -65,7 +67,10 @@ jobs:
 ## Optional Parameters
 The following parameters are supported:
 - `eessi_stack_version`: version of the EESSI stack to use (defaults to `2023.06`)
-- `eessi_config_package`: location of the EESSI CernVM-FS configuration package (defaults to `https://github.com/EESSI/filesystem-layer/releases/download/latest/cvmfs-config-eessi_latest_all.deb`). 
+- `eessi_repositories`: Comma separated list of EESSI repositories to make available (defaults to `software.eessi.io,dev.eessi.io`).
+- `use_eessi_module`: Use the Lmod method to initialise EESSI (defaults to `true`)
+- `mount_cvmfs_only`: Only mount the EESSI CernVM-FS repositories, do not initialise EESSI (defaults to `false`)
+- `init_direnv`: Initialise direnv for the repository (defaults to `true`)
 <!--For macOS this parameter is required (e.g., `https://github.com/EESSI/filesystem-layer/releases/download/latest/cvmfs-config-eessi_latest_all.pkg`) -->
 
 ## Minimal Example

action.yml

@@ -35,10 +35,19 @@ runs:
         cvmfs_http_proxy: DIRECT
         cvmfs_repositories: 'cvmfs-config.cern.ch,${{ inputs.eessi_repositories }}'
     - id: install-eessi
+      shell: bash
+      env:
+        EESSI_STACK_VERSION: ${{ inputs.eessi_stack_version }}
+        ALLOWED_VERSIONS: "2023.06 2025.06"
       run: |
         if [ "$RUNNER_OS" == "Linux" ]; then
           echo 'unset BASH_ENV' >> $HOME/env_config.export
           if [[ "${{ inputs.mount_cvmfs_only }}" == "false" ]]; then
+            [[ " $ALLOWED_VERSIONS " =~ " $EESSI_STACK_VERSION " ]] || {
+              echo "Invalid eessi_stack_version: '$EESSI_STACK_VERSION'"
+              echo "Allowed values: $ALLOWED_VERSIONS"
+              exit 1
+            }
             if [[ "${{ inputs.use_eessi_module }}" == "true" ]]; then
               # Make the EESSI module sticky so that it persists in case `module purge` is used
               # (while still allowing for a swap if needed)
@@ -72,6 +81,3 @@ runs:
           # cat /Users/runner/.lima/eessi/ha.stderr.log
         fi
       shell: bash
-      env:
-        EESSI_STACK_VERSION: ${{ inputs.eessi_stack_version }}
-