add debug image publishing

Author: gilesknap

.github/workflows/_container.yml

@@ -62,3 +62,25 @@ jobs:
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+
+      - name: Create tags for publishing debug image
+        id: meta-debug
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository }}-debug
+          tags: |
+            type=ref,event=tag
+            type=raw,value=latest
+      - name: Push cached debug image to container registry
+        if: inputs.publish && github.ref_type == 'tag'
+        uses: docker/build-push-action@v6
+        env:
+          DOCKER_BUILD_RECORD_UPLOAD: false
+        # This does not build the image again, it will find the image in the
+        # Docker cache and publish it
+        with:
+          context: .
+          push: true
+          target: developer
+          tags: ${{ steps.meta-debug.outputs.tags }}
+          labels: ${{ steps.meta-debug.outputs.labels }}

.vscode/launch.json

@@ -14,10 +14,11 @@
             },
             "pathMappings": [
                 {
-                    "localRoot": "${workspaceFolder}",
-                    "remoteRoot": "/venv/lib/python3.13/site-packages/stdio_socket"
+                    "localRoot": "${workspaceFolder}/src/fastcs_example",
+                    "remoteRoot": "/venv/lib/python3.11/site-packages/fastcs_example/"
                 }
-            ]
+            ],
+            "justMyCode": false
         },
         {
             "name": "Debug Unit Test",

Dockerfile

@@ -6,9 +6,14 @@ FROM python:${PYTHON_VERSION} AS developer
 # Add any system dependencies for the developer/build environment here
 RUN apt-get update && apt-get install -y --no-install-recommends \
     gdb \
+    busybox \
     graphviz \
     && rm -rf /var/lib/apt/lists/*
 
+# Use busybox to provide any missing commands
+# This is useful for commands like `telnet` that are not available in the base image
+RUN busybox --install -s
+
 # Set up a virtual environment and put it in PATH
 RUN python -m venv /venv
 ENV PATH=/venv/bin:$PATH