diff --git a/.github/workflows/build-and-publish.yml b/.github/workflows/build-and-publish.yml
index 4a38ff6..ab52227 100644
--- a/.github/workflows/build-and-publish.yml
+++ b/.github/workflows/build-and-publish.yml
@@ -1,11 +1,11 @@
 name: Publish Desktop Environment
 on: [push]
-env:
-  DOCKER_BUILDKIT: 1
 jobs:
   build:
     runs-on: ubuntu-latest
+
     steps:
+
       - name: Check out repository
         uses: actions/checkout@v2
 
@@ -15,15 +15,14 @@ jobs:
       - name: Sanitise Repository Owner
         run: echo ::set-env name=REPOSITORY_OWNER::$(echo ${{ github.repository_owner }} | tr '[:upper:]' '[:lower:]')
 
-      - name: Push to GitHub Container Registry
-        uses: docker/build-push-action@v1
+      - name: Build and Push to GitHub Container Registry
+        uses: whoan/docker-build-with-cache-action@master
         with:
-          build_args: BUILDKIT_INLINE_CACHE=1,DESKTOP_ENVIRONMENT_USER=${{ env.REPOSITORY_OWNER }}
-          cache_froms: docker.pkg.github.com/${{ env.GITHUB_REPOSITORY }}/desktop-environment:${{ github.ref }}
+          build_extra_args: --build-arg=DESKTOP_ENVIRONMENT_USER=${{ env.REPOSITORY_OWNER }}
           dockerfile: docker/Dockerfile
+          image_name: desktop-environment
+          push_git_tag: true
           registry: docker.pkg.github.com/${{ env.GITHUB_REPOSITORY }}
-          repository: desktop-environment
-          tag_with_ref: true
           username: ${{ env.REPOSITORY_OWNER }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
diff --git a/docker/Dockerfile b/docker/Dockerfile
index bda27c6..99721d6 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -316,7 +316,7 @@ RUN wget -O skype.deb -q https://go.skype.com/skypeforlinux-64.deb && \
   rm skype.deb
 
 # Install slack
-RUN wget -O slack.deb -nv https://downloads.slack-edge.com/linux_releases/slack-desktop-4.9.1-amd64.deb && \
+RUN wget -O slack.deb -nv https://downloads.slack-edge.com/linux_releases/slack-desktop-4.1.1-amd64.deb && \
   dpkg -i slack.deb || apt-get install -qq --fix-broken && \
   rm slack.deb
 
@@ -427,10 +427,11 @@ ARG DOTFILES_CACHEBUST
 RUN DOTFILES_CACHEBUST=$DOTFILES_CACHEBUST echo "Building from dotfiles..."
 
 # Clone user dotfiles
-RUN vcsh clone https://github.com/sabrehagen/dotfiles.git && \
+RUN vcsh clone https://github.com/$DESKTOP_ENVIRONMENT_USER/dotfiles.git && \
   $HOME/.dotfiles-bootstrap.sh
 
 # Record container build information
 ARG DESKTOP_CONTAINER_GIT_SHA
 ENV CONTAINER_GIT_SHA $DESKTOP_CONTAINER_GIT_SHA
-ENV CONTAINER_IMAGE_NAME sabrehagen/desktop-environment
+ARG DESKTOP_ENVIRONMENT_CONTAINER_IMAGE_NAME
+ENV DESKTOP_ENVIRONMENT_CONTAINER_IMAGE_NAME $DESKTOP_ENVIRONMENT_CONTAINER_IMAGE_NAME
diff --git a/docker/scripts/build.sh b/docker/scripts/build.sh
index be6b6b9..074fd61 100755
--- a/docker/scripts/build.sh
+++ b/docker/scripts/build.sh
@@ -8,6 +8,7 @@ DESKTOP_ENVIRONMENT_HOST_USER_PASSWORD=$(sudo cat /etc/shadow | grep $DESKTOP_EN
 
 docker build \
   --build-arg DESKTOP_CONTAINER_GIT_SHA=$(git --git-dir $REPO_ROOT/.git rev-parse HEAD | cut -b 1-7) \
+  --build-arg DESKTOP_ENVIRONMENT_CONTAINER_IMAGE_NAME="$DESKTOP_ENVIRONMENT_REGISTRY/$DESKTOP_ENVIRONMENT_CONTAINER_IMAGE" \
   --build-arg DESKTOP_ENVIRONMENT_HOST_USER_PASSWORD="$DESKTOP_ENVIRONMENT_HOST_USER_PASSWORD" \
   --build-arg DESKTOP_ENVIRONMENT_USER="$DESKTOP_ENVIRONMENT_USER" \
   --build-arg DOTFILES_CACHEBUST=$(cat $REPO_ROOT/.dotfiles-cachebust 2>/dev/null) \