switch horizon image to use horizon-rxt

use multi-stage build

Signed-off-by: Kevin Carter <[email protected]>

.github/workflows/release-horizon-rxt.yml

@@ -56,6 +56,8 @@ jobs:
       # This step uses the `docker/build-push-action` action to build the image, based on your repository's `Dockerfile`. If the build succeeds, it pushes the image to GitHub Packages.
       # It uses the `context` parameter to define the build's context as the set of files located in the specified path. For more information, see "[Usage](https://github.com/docker/build-push-action#usage)" in the README of the `docker/build-push-action` repository.
       # It uses the `tags` and `labels` parameters to tag and label the image with the output from the "meta" step.
+      - name: Dynamically set MY_DATE environment variable
+        run: echo "MY_DATE=$(date +%s)" >> $GITHUB_ENV
       - name: Build and push Docker image
         uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
         with:
@@ -64,6 +66,7 @@ jobs:
           push: true
           tags: |
             ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}/horizon-rxt:${{ github.event.inputs.pluginTag }}
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}/horizon-rxt:${{ github.event.inputs.pluginTag }}-${{ env.MY_DATE }}
           labels: ${{ steps.meta.outputs.labels }}
           build-args: |
             VERSION=${{ github.event.inputs.imageTag }}

Containerfiles/HorizonRXT-Containerfile

@@ -1,6 +1,14 @@
 ARG VERSION=master-ubuntu_jammy
-FROM openstackhelm/horizon:${VERSION}
+FROM openstackhelm/horizon:${VERSION} as build
 ARG PLUGIN_VERSION=master
-RUN /var/lib/openstack/bin/pip install --constraint=https://releases.openstack.org/constraints/upper/${PLUGIN_VERSION} \
-                               heat-dashboard \
-                               octavia-dashboard
+RUN apt update && apt install -y git
+RUN /var/lib/openstack/bin/pip install --upgrade --force-reinstall pip
+RUN export ORIG_PLUGIN_VERSION="${PLUGIN_VERSION}"; \
+    if [ "${PLUGIN_VERSION}" != 'master' ]; then export PLUGIN_VERSION=stable/${PLUGIN_VERSION}; fi; \
+    . /var/lib/openstack/bin/activate; \
+    /var/lib/openstack/bin/pip install --constraint=https://releases.openstack.org/constraints/upper/${ORIG_PLUGIN_VERSION} \
+                               git+https://opendev.org/openstack/heat-dashboard@${PLUGIN_VERSION}#egg=heat_dashboard \
+                               git+https://opendev.org/openstack/octavia-dashboard@${PLUGIN_VERSION}#egg=octavia_dashboard
+RUN find /var/lib/openstack -regex '^.*\(__pycache__\|\.py[co]\)$' -delete
+FROM openstackhelm/horizon:${VERSION}
+COPY --from=build /var/lib/openstack/. /var/lib/openstack/