Add Slim Image

Adds an image with only one python version installed. This can be useful
in development environments for other projects where the multi-version
features are less useful than a more efficient container.

Signed-off-by: Hassan Abouelela <[email protected]>

.github/workflows/deploy.yaml

@@ -22,6 +22,12 @@ jobs:
         with:
           name: ${{ inputs.artifact }}
 
+      - name: Set up Python
+        id: python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+
       # Load the image to make use of common layers during the final build.
       - name: Load image from archive
         run: docker load -i ${{ inputs.artifact }}.tar
@@ -106,3 +112,24 @@ jobs:
           tags: |
             ghcr.io/python-discord/snekbox-venv:latest
             ghcr.io/python-discord/snekbox-venv:${{ inputs.version }}
+
+      # Build a lightweight image with a singular python version
+      - name: Regenerate dockerfile
+        run: python scripts/set_versions.py
+        env:
+          VERSIONS_CONFIG: config/versions-light.json
+
+      - name: Build & push slim image
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          cache-from: |
+            ghcr.io/python-discord/snekbox-base:latest
+            ghcr.io/python-discord/snekbox-venv:latest
+            ghcr.io/python-discord/snekbox:latest
+          cache-to: type=inline
+          tags: |
+            ghcr.io/python-discord/snekbox:latest-slim
+            ghcr.io/python-discord/snekbox:${{ inputs.version }}-slim

Dockerfile

@@ -22,13 +22,16 @@ RUN make
 # ------------------------------------------------------------------------------
 FROM python:3.11-slim-buster as base-first
 
-FROM python:3.10-slim-buster as base-3-10
+FROM python:3.7-slim-buster as base-3-7
 COPY --from=base-first / /
 
+FROM python:3.9-slim-buster as base-3-9
+COPY --from=base-3-7 / /
+
 # ------------------------------------------------------------------------------
 FROM python:3.11-slim-buster as base
 
-COPY --from=base-3-10 / /
+COPY --from=base-3-9 / /
 
 # Everything will be a user install to allow snekbox's dependencies to be kept
 # separate from the packages exposed during eval.

config/versions-light.json

@@ -0,0 +1,8 @@
+[
+  {
+    "image_tag": "3.11-slim-buster",
+    "version_name": "3.11",
+    "display_name": "CPython 3.11",
+    "is_main": true
+  }
+]

config/versions.json

@@ -1,8 +1,14 @@
 [
   {
-    "image_tag": "3.10-slim-buster",
-    "version_name": "3.10",
-    "display_name": "CPython 3.10",
+    "image_tag": "3.7-slim-buster",
+    "version_name": "3.7",
+    "display_name": "CPython 3.7",
+    "is_main": false
+  },
+  {
+    "image_tag": "3.9-slim-buster",
+    "version_name": "3.9",
+    "display_name": "CPython 3.9",
     "is_main": false
   },
   {