Update mixer-ci image build

Rework how mixer-ci is built and remove it from the test matrix as it
is no longer automatically updated as github's runner isn't able to
build it at this time.

Signed-off-by: William Douglas <william.douglas@intel.com>

.github/workflows/test.yml

@@ -18,7 +18,6 @@ jobs:
          - machine-learning-ui
          - mariadb
          - memcached
-         - mixer-ci
          - nginx
          - node
          - openjdk/8
@@ -44,6 +43,6 @@ jobs:
       run: |
         dir=$(pwd)
         cd ${{matrix.node}}
-        docker build -t clearlinux/${{matrix.node}} .
+        docker build -t ghcr.io/clearlinux/${{matrix.node}} .
         cd $dir
         if [ -d "./tests/${{matrix.node}}" ]; then cd tests; make ${{matrix.node}}; fi

mixer-ci/Dockerfile

@@ -1,15 +1,44 @@
-FROM clearlinux:latest
 ARG clear_ver
+FROM ghcr.io/clearlinux/os-core:$clear_ver AS core
+FROM clearlinux:latest AS builder
+
+ARG clear_ver
+ARG swupd_args
+# Move to latest Clear Linux release to ensure
+# that the swupd command line arguments are
+# correct
+RUN swupd update --no-boot-update -V $clear_ver $swupd_args
+
+# Grab os-release info from the minimal base image so
+# that the new content matches the exact OS version
+COPY --from=core /usr/lib/os-release /
+
+# Install additional content in a target directory
+# using the os version from the minimal base
+RUN source /os-release && \
+    mkdir /install_root \
+    && swupd os-install -V ${VERSION_ID} \
+    --path /install_root --statedir /swupd-state \
+    --bundles=mixer,go-basic,c-basic,os-core-update-dev,sudo --no-boot-update
+
+# For some Host OS configuration with redirect_dir on,
+# extra data are saved on the upper layer when the same
+# file exists on different layers. To minimize docker
+# image size, remove the overlapped files before copy.
+RUN mkdir /os_core_install
+COPY --from=core / /os_core_install/
+RUN cd / && \
+    find os_core_install | sed -e 's/os_core_install/install_root/' | xargs rm -d &> /dev/null || true
+
+FROM core
+
+COPY --from=builder /install_root /
+
+RUN useradd -G wheelnopw clr && mkdir -p /run/lock
 
-# Configure Go
 ENV GOPATH /home/clr/go
 ENV PATH="/home/clr/go/bin:${PATH}"
 
-# Update and add bundles
-RUN swupd update -V $clear_ver && \
-    swupd bundle-add mixer go-basic c-basic os-core-update-dev sudo && \
-    useradd -G wheelnopw clr && \
-    mkdir -p /run/lock
 USER clr
 RUN git config --global user.email "travis@example.com" && \
     git config --global user.name "Travis CI"