Link image to repo and fix image name

.github/workflows/docker-publish.yml

@@ -14,8 +14,7 @@ on:
   pull_request:
 
 env:
-  # TODO: Change variable to your image's name.
-  IMAGE_NAME: image
+  IMAGE_NAME: compobot
 
 jobs:
   # Run tests.
@@ -51,7 +50,6 @@ jobs:
         run: docker build . --file Dockerfile --tag $IMAGE_NAME
 
       - name: Log into GitHub Container Registry
-      # TODO: Create a PAT with `read:packages` and `write:packages` scopes and save it as an Actions secret `CR_PAT`
         run: echo "${{ secrets.CR_PAT }}" | docker login https://ghcr.io -u ${{ github.actor }} --password-stdin
 
       - name: Push image to GitHub Container Registry

Dockerfile

@@ -1,6 +1,7 @@
 FROM alpine:latest
 
 LABEL maintainer "J. Elfring <code@elfring.ms>"
+LABEL org.opencontainers.image.source https://github.com/elfrinjo/compoBot
 
 RUN apk --no-cache --update \
         add bash \