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diff --git a/.github/actions/download-or-build-container/action.yml b/.github/actions/download-or-build-container/action.yml
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+++ b/.github/actions/download-or-build-container/action.yml
@@ -0,0 +1,109 @@
+# Run a build step in a container or directly on the Actions runner
+name: Download or Build Container
+description: Download a container from the package registry, or build it if it's not found
+
+inputs:
+  container:
+    description: Container name
+    type: string
+    required: true
+  dockerfile:
+    description: Dockerfile
+    type: string
+  base:
+    description: Container base
+    type: string
+  registry:
+    description: Docker registry to read and publish to
+    type: string
+    default: ghcr.io
+  config-path:
+    description: Path to Dockerfiles
+    type: string
+  github_token:
+    description: GitHub Token
+    type: string
+
+runs:
+  using: 'composite'
+  steps:
+  - name: Download container
+    run: |
+      IMAGE_NAME="${{ inputs.container }}"
+      DOCKERFILE_PATH="${{ inputs.dockerfile }}"
+      DOCKER_REGISTRY="${{ inputs.registry }}"
+      DOCKERFILE_ROOT="${{ inputs.config-path }}"
+
+      if [ "${DOCKERFILE_PATH}" = "" ]; then
+        DOCKERFILE_PATH="${DOCKERFILE_ROOT}/${IMAGE_NAME}"
+      else
+        DOCKERFILE_PATH="${DOCKERFILE_ROOT}/${DOCKERFILE_PATH}"
+      fi
+
+      GIT_WORKTREE=$(cd "${GITHUB_ACTION_PATH}" && git rev-parse --show-toplevel)
+      echo "::: git worktree is ${GIT_WORKTREE}"
+      cd "${GIT_WORKTREE}"
+
+      DOCKER_CONTAINER="${GITHUB_REPOSITORY}/${IMAGE_NAME}"
+      DOCKER_REGISTRY_CONTAINER="${DOCKER_REGISTRY}/${DOCKER_CONTAINER}"
+
+      echo "dockerfile=${DOCKERFILE_PATH}" >> $GITHUB_ENV
+      echo "docker-container=${DOCKER_CONTAINER}" >> $GITHUB_ENV
+      echo "docker-registry-container=${DOCKER_REGISTRY_CONTAINER}" >> $GITHUB_ENV
+
+      # Identify the last git commit that touched the Dockerfiles
+      # Use this as a hash to identify the resulting docker containers
+      echo "::: dockerfile path is ${DOCKERFILE_PATH}"
+
+      DOCKER_SHA=$(git log -1 --pretty=format:"%h" -- "${DOCKERFILE_PATH}")
+      echo "docker-sha=${DOCKER_SHA}" >> $GITHUB_ENV
+
+      echo "::: docker sha is ${DOCKER_SHA}"
+
+      DOCKER_REGISTRY_CONTAINER_SHA="${DOCKER_REGISTRY_CONTAINER}:${DOCKER_SHA}"
+
+      echo "docker-registry-container-sha=${DOCKER_REGISTRY_CONTAINER_SHA}" >> $GITHUB_ENV
+      echo "docker-registry-container-latest=${DOCKER_REGISTRY_CONTAINER}:latest" >> $GITHUB_ENV
+
+      echo "::: logging in to ${DOCKER_REGISTRY} as ${GITHUB_ACTOR}"
+
+      exists="true"
+      docker login https://${DOCKER_REGISTRY} -u ${GITHUB_ACTOR} -p ${GITHUB_TOKEN} || exists="false"
+
+      echo "::: pulling ${DOCKER_REGISTRY_CONTAINER_SHA}"
+
+      if [ "${exists}" != "false" ]; then
+        docker pull ${DOCKER_REGISTRY_CONTAINER_SHA} || exists="false"
+      fi
+
+      if [ "${exists}" = "true" ]; then
+        echo "::: docker container exists in registry"
+        echo "docker-container-exists=true" >> $GITHUB_ENV
+      else
+        echo "::: docker container does not exist in registry"
+        echo "docker-container-exists=false" >> $GITHUB_ENV
+      fi
+    shell: bash
+    env:
+      GITHUB_TOKEN: ${{ inputs.github_token }}
+  - name: Create container
+    run: |
+      if [ "${{ inputs.base }}" != "" ]; then
+        BASE_ARG="--build-arg BASE=${{ inputs.base }}"
+      fi
+
+      GIT_WORKTREE=$(cd "${GITHUB_ACTION_PATH}" && git rev-parse --show-toplevel)
+      echo "::: git worktree is ${GIT_WORKTREE}"
+      cd "${GIT_WORKTREE}"
+
+      docker build -t ${{ env.docker-registry-container-sha }} --build-arg UID=$(id -u) --build-arg GID=$(id -g) ${BASE_ARG} -f ${{ env.dockerfile }} .
+      docker tag ${{ env.docker-registry-container-sha }} ${{ env.docker-registry-container-latest }}
+    shell: bash
+    working-directory: source/${{ inputs.config-path }}
+    if: env.docker-container-exists != 'true'
+  - name: Publish container
+    run: |
+      docker push ${{ env.docker-registry-container-sha }}
+      docker push ${{ env.docker-registry-container-latest }}
+    shell: bash
+    if: env.docker-container-exists != 'true' && github.event_name != 'pull_request'