Handle new default swapfile path

Newer github runners appears to have the swapfile on a different
location compared to before, so we update the scripts to handle
this, along with being a bit more verbose for debugging.

Author: JonasAlfredsson

action.yml

@@ -15,23 +15,40 @@ inputs:
     description: 'Size of the new swap space (in gigabytes)'
     required: false
     type: number
-    default: 4
+    default: 3
   swap_location:
     description: 'Path to the new swap file'
     required: false
-    default: '/mnt/swapfile'
+    default: '/swapfile'
 
 runs:
   using: "composite"
   steps:
-    - name: Replace the current swap file
-      if: inputs.swap_size != 4 || inputs.swap_location != '/mnt/swapfile'
+    - name: Check current memory and swap status
       shell: bash
       run: |
-        sudo swapoff /mnt/swapfile
+        echo "-- Current memory status: --"
+        sudo free -h
+        echo
+        echo "-- Current swapfile info: --"
+        sudo swapon --show
+        if [ "$(sudo swapon --show --noheadings | wc -l)" -gt 0 ]; then
+          echo "CURRENT_SWAPFILE_PATH=$(sudo swapon --show --noheadings | head -n 1 | cut -d' ' -f1)" >> $GITHUB_ENV
+        else
+          echo "CURRENT_SWAPFILE_PATH=" >> $GITHUB_ENV
+        fi
 
-        sudo rm -v /mnt/swapfile
+    - name: Remove current swapfile
+      if: env.CURRENT_SWAPFILE_PATH != ''
+      shell: bash
+      run: |
+        sudo swapoff "${CURRENT_SWAPFILE_PATH}"
+
+        sudo rm -v "${CURRENT_SWAPFILE_PATH}"
 
+    - name: Create new swap file
+      shell: bash
+      run: |
         sudo fallocate -l ${{ inputs.swap_size }}G "${{ inputs.swap_location }}"
 
         sudo chmod 600 "${{ inputs.swap_location }}"
@@ -40,11 +57,13 @@ runs:
 
         sudo swapon "${{ inputs.swap_location }}"
 
-    - name: Show current memory and swap status
+    - name: Show new memory and swap status
       shell: bash
       run: |
+        echo "-- New memory status: --"
         sudo free -h
         echo
+        echo "-- New swapfile info: --"
         sudo swapon --show
 
     - name: Mount a tmpfs over /var/lib/docker