build!: Remove Dockerfile and image building workflows (#36006)

These are not maintained by the Open edX community.

https://github.com/openedx/public-engineering/issues/263

.github/workflows/docker-publish.yml

@@ -1,43 +0,0 @@
-name: Push Docker Images
-
-on:
-  push:
-    branches:
-      - master
-
-jobs:
-  # Push image to GitHub Packages.
-  # See also https://docs.docker.com/docker-hub/builds/
-  push:
-    runs-on: ubuntu-latest
-    if: github.event_name == 'push'
-
-    strategy:
-      matrix:
-        variant:
-          - "lms_dev"
-          - "cms_dev"
-          - "cms"
-          - "lms"
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-
-      - name: Login to DockerHub
-        uses: docker/login-action@v3
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_PASSWORD }}
-
-      - name: Build and push lms/cms base docker images
-        env:
-          DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
-          DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
-        run: make docker_tag_build_push_${{matrix.variant}}

.github/workflows/publish-ci-docker-image.yml

@@ -1,43 +0,0 @@
-name: Push CI Runner Docker Image
-
-on:
-  workflow_dispatch:
-  schedule:
-    - cron: "0 1 * * 3"
-
-jobs:
-  push:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      # This has to happen after checkout in order for gh to work.
-      - name: "Cancel scheduled job on forks"
-        if: github.repository != 'openedx/edx-platform' && github.event_name == 'schedule'
-        env:
-          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
-        run: |
-          gh run cancel "${{ github.run_id }}"
-          gh run watch "${{ github.run_id }}"
-
-      - name: Configure AWS Credentials
-        uses: aws-actions/configure-aws-credentials@v4
-        with:
-          aws-access-key-id: ${{ secrets.TOOLS_EDX_ECR_USER_AWS_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.TOOLS_EDX_ECR_USER_AWS_SECRET_ACCESS_KEY }}
-          aws-region: us-east-1
-
-      - name: Log in to ECR
-        id: login-ecr
-        uses: aws-actions/amazon-ecr-login@v2
-
-      - name: Build, tag, and push image to Amazon ECR
-        env:
-          ECR_REGISTRY: ${{ steps.login-ecr.outputs.registry }}
-          ECR_REPOSITORY: actions-runner
-          IMAGE_TAG: latest
-        run: |
-          docker build -t $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG -f scripts/ci-runner.Dockerfile .
-          docker push $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG