Add Workflow to Publish Katib Images

.github/workflows/publish-algorithm-images.yaml

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+name: Publish AutoML Algorithm Images
+
+on:
+  push:
+    branches:
+      - master
+
+env:
+  DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
+  DOCKERHUB_TOKEN: ${{ secrets.DOCKERHUB_TOKEN }}
+
+jobs:
+  algorithm:
+    name: Publish Image
+    # Trigger workflow only for kubeflow/katib repository.
+    if: github.repository == 'kubeflow/katib'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Publish Component ${{ matrix.component-name }}
+        uses: ./.github/workflows/template-publish-image
+        with:
+          image: docker.io/kubeflowkatib/${{ matrix.component-name }}
+          dockerfile: ${{ matrix.dockerfile }}
+
+    strategy:
+      matrix:
+        include:
+          - component-name: suggestion-hyperopt
+            dockerfile: cmd/suggestion/hyperopt/v1beta1/Dockerfile
+          - component-name: suggestion-chocolate
+            dockerfile: cmd/suggestion/chocolate/v1beta1/Dockerfile
+          - component-name: suggestion-hyperband
+            dockerfile: cmd/suggestion/hyperband/v1beta1/Dockerfile
+          - component-name: suggestion-skopt
+            dockerfile: cmd/suggestion/skopt/v1beta1/Dockerfile
+          - component-name: suggestion-goptuna
+            dockerfile: cmd/suggestion/goptuna/v1beta1/Dockerfile
+          - component-name: suggestion-optuna
+            dockerfile: cmd/suggestion/optuna/v1beta1/Dockerfile
+          - component-name: suggestion-enas
+            dockerfile: cmd/suggestion/nas/enas/v1beta1/Dockerfile
+          - component-name: suggestion-darts
+            dockerfile: cmd/suggestion/nas/darts/v1beta1/Dockerfile
+          - component-name: earlystopping-medianstop
+            dockerfile: cmd/earlystopping/medianstop/v1beta1/Dockerfile

.github/workflows/publish-core-images.yaml

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+name: Publish Katib Core Images
+
+on:
+  push:
+    branches:
+      - master
+
+env:
+  DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
+  DOCKERHUB_TOKEN: ${{ secrets.DOCKERHUB_TOKEN }}
+
+jobs:
+  core:
+    name: Publish Image
+    # Trigger workflow only for kubeflow/katib repository.
+    if: github.repository == 'kubeflow/katib'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Publish Component ${{ matrix.component-name }}
+        uses: ./.github/workflows/template-publish-image
+        with:
+          image: docker.io/kubeflowkatib/${{ matrix.component-name }}
+          dockerfile: ${{ matrix.dockerfile }}
+
+    strategy:
+      matrix:
+        include:
+          - component-name: katib-controller
+            dockerfile: cmd/katib-controller/v1beta1/Dockerfile
+          - component-name: katib-db-manager
+            dockerfile: cmd/db-manager/v1beta1/Dockerfile
+          - component-name: katib-ui
+            dockerfile: cmd/new-ui/v1beta1/Dockerfile
+          - component-name: cert-generator
+            dockerfile: cmd/cert-generator/v1beta1/Dockerfile
+          - component-name: file-metrics-collector
+            dockerfile: cmd/metricscollector/v1beta1/file-metricscollector/Dockerfile
+          - component-name: tfevent-metrics-collector
+            dockerfile: cmd/metricscollector/v1beta1/tfevent-metricscollector/Dockerfile

.github/workflows/publish-trial-images.yaml

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+name: Publish Trial Images
+
+on:
+  push:
+    branches:
+      - master
+
+env:
+  DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
+  DOCKERHUB_TOKEN: ${{ secrets.DOCKERHUB_TOKEN }}
+
+jobs:
+  trial:
+    name: Publish Image
+    # Trigger workflow only for kubeflow/katib repository.
+    if: github.repository == 'kubeflow/katib'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Publish Trial ${{ matrix.trial-name }}
+        uses: ./.github/workflows/template-publish-image
+        with:
+          image: docker.io/kubeflowkatib/${{ matrix.trial-name }}
+          dockerfile: ${{ matrix.dockerfile }}
+
+    strategy:
+      matrix:
+        include:
+          - trial-name: mxnet-mnist
+            dockerfile: examples/v1beta1/trial-images/mxnet-mnist/Dockerfile
+          - trial-name: pytorch-mnist
+            dockerfile: examples/v1beta1/trial-images/pytorch-mnist/Dockerfile
+          - trial-name: enas-cnn-cifar10-gpu
+            dockerfile: examples/v1beta1/trial-images/enas-cnn-cifar10/Dockerfile.gpu
+          - trial-name: enas-cnn-cifar10-cpu
+            dockerfile: examples/v1beta1/trial-images/enas-cnn-cifar10/Dockerfile.cpu
+          - trial-name: darts-cnn-cifar10
+            dockerfile: examples/v1beta1/trial-images/darts-cnn-cifar10/Dockerfile

.github/workflows/template-publish-image/action.yaml

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+# Template run for publishing Katib images.
+
+inputs:
+  image:
+    required: true
+    type: string
+  dockerfile:
+    required: true
+    type: string
+
+runs:
+  using: composite
+  steps:
+    - name: Set Up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+
+    - name: Docker Login
+      uses: docker/login-action@v1
+      with:
+        username: ${{ env.DOCKERHUB_USERNAME }}
+        password: ${{ env.DOCKERHUB_TOKEN }}
+
+    - name: Add Docker Tags
+      id: meta
+      uses: docker/metadata-action@v3
+      with:
+        images: ${{ inputs.image }}
+        tags: |
+          type=raw,latest
+          type=sha,prefix=v1beta1-
+
+    - name: Build and Push
+      uses: docker/build-push-action@v2
+      with:
+        context: .
+        file: ${{ inputs.dockerfile }}
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        cache-from: type=gha
+        cache-to: type=gha,mode=max