Add workflow making wsl image

.github/workflows/create-wsl-image.yml

@@ -0,0 +1,34 @@
+name: Build Docker Image and Export for WSL
+
+on:
+  schedule:
+    - cron: '0 2 * * *'  # Run every day
+  workflow_dispatch:
+
+jobs:
+  build-and-export:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Prepare Dockerfile
+        run: |
+          curl -o Dockerfile https://raw.githubusercontent.com/sagemath/sage-binder-env/master/Dockerfile
+          sed -i '/COPY notebooks/d' Dockerfile  # remove the line from Dockerfile
+
+      - name: Extract version from Dockerfile
+        id: extract_version
+        run: |
+          VERSION=$(grep '^FROM ghcr.io/sagemath/sage-binder-env:' Dockerfile | sed 's/^FROM ghcr.io\/sagemath\/sage-binder-env://')
+          echo "VERSION=$VERSION" >> $GITHUB_ENV
+
+      - name: Build and export Docker image
+        run: |
+          docker build -t sagemath-container .
+          export CONTAINER_ID=$(docker create sagemath-container)
+          docker export $CONTAINER_ID -o sagemath-$VERSION-wsl.tar
+
+      - name: Upload tar file as artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: sagemath-wsl-image
+          path: sagemath-${{ env.VERSION }}-wsl.tar

Dockerfile

@@ -1,7 +1,7 @@
 # Dockerfile for binder
 # Reference: https://mybinder.readthedocs.io/en/latest/tutorials/dockerfile.html
 
-FROM ghcr.io/sagemath/sage-binder-env:10.2
+FROM ghcr.io/sagemath/sage-binder-env:10.4
 
 USER root
 

README.rst

@@ -28,7 +28,7 @@ Extending the Dockerfile
 
 The `Dockerfile` is based on the Docker image::
 
-    FROM ghcr.io/sagemath/sage-binder-env:10.2
+    FROM ghcr.io/sagemath/sage-binder-env:10.4
 
 which contains the latest stable version of Sage.