diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..f4cfc78
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,17 @@
+name: CI
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch: {}
+  pull_request:
+    types: [opened, synchronize]
+    branches:
+      - main
+
+jobs:
+  docker-image:
+    uses: ./.github/workflows/docker.yml
+  api-doc:
+    needs: [docker-image]
+    uses: ./.github/workflows/sphinx.yml
\ No newline at end of file
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
new file mode 100644
index 0000000..3001815
--- /dev/null
+++ b/.github/workflows/docker.yml
@@ -0,0 +1,69 @@
+name: docker-image
+on:
+  workflow_call:
+
+env:
+  REGISTRY: ghcr.io
+  # github.repository as <account>/<repo>
+  IMAGE_NAME: LLNL/GPLaSDI/lasdi_env
+  DOCKERPATH: docker
+
+jobs:
+  docker-ci:
+    runs-on: ubuntu-latest
+    name: "docker env"
+    env:
+      DOCKERPATH: docker
+    steps:
+      - name: test command
+        run: echo "docker-ci command"
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - uses: Ana06/get-changed-files@v2.2.0       
+        id: files
+      - name: DockerPATH configuration
+        run: echo "DOCKERPATH=$DOCKERPATH"
+      - name: DockerPATH - check if files in docker path changed
+        if: contains(steps.files.outputs.all,env.DOCKERPATH) || contains(steps.files.outputs.all,'docker.yml')
+        run: |
+          echo "CI container needs rebuilding..."
+          echo "CI_NEEDS_REBUILD=true" >> $GITHUB_ENV
+      - name: Log into registry ${{ env.REGISTRY }}
+        if: env.CI_NEEDS_REBUILD
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        if: env.CI_NEEDS_REBUILD
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: type=sha
+          flavor: latest=true
+      - name: Build Container motd
+        if: env.CI_NEEDS_REBUILD
+        run: |
+          echo "#!/bin/bash" > ${{env.DOCKERPATH}}/motd.sh
+          echo "echo --------------------------" >> ${{env.DOCKERPATH}}/motd.sh
+          echo "echo lasdi_env/CI Development Container"  >> ${{env.DOCKERPATH}}/motd.sh
+          echo "echo \"Revision: `echo ${GITHUB_SHA} | cut -c1-8`\"" >> ${{env.DOCKERPATH}}/motd.sh
+          echo "echo --------------------------" >> ${{env.DOCKERPATH}}/motd.sh
+          chmod 755 ${{env.DOCKERPATH}}/motd.sh
+          cat ${{env.DOCKERPATH}}/motd.sh
+      - name: Docker Image - Build and push
+        if: env.CI_NEEDS_REBUILD
+        uses: docker/build-push-action@v5
+        with:
+          push: true
+          context: ${{ env.DOCKERPATH }}
+          tags: ${{ steps.meta.outputs.tags }}
+          # platforms: linux/amd64,linux/arm64
+          platforms: linux/amd64
diff --git a/.github/workflows/sphinx.yml b/.github/workflows/sphinx.yml
index 674ff26..4549f5d 100644
--- a/.github/workflows/sphinx.yml
+++ b/.github/workflows/sphinx.yml
@@ -1,13 +1,24 @@
 name: "Sphinx: Render docs"
 
-on: push
+# on: push
+on:
+  workflow_call:
 
 jobs:
   build:
     runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/llnl/gplasdi/lasdi_env:latest
+      options: --user 1001 --privileged
+      volumes:
+        - /mnt:/mnt
     permissions:
       contents: write
     steps:
+    - name: Cancel previous runs
+      uses: styfle/cancel-workflow-action@0.11.0
+      with:
+        access_token: ${{ github.token }}
     - uses: actions/checkout@v4
     - name: Build HTML
       uses: ammaraskar/sphinx-action@master
diff --git a/docker/Dockerfile b/docker/Dockerfile
new file mode 100644
index 0000000..aff014a
--- /dev/null
+++ b/docker/Dockerfile
@@ -0,0 +1,36 @@
+FROM ubuntu:22.04
+
+ENV ENVDIR=env
+
+# install sudo
+RUN apt-get -yq update && apt-get -yq install sudo
+
+WORKDIR /$ENVDIR
+
+# install packages
+RUN sudo apt-get install -yq git
+RUN sudo apt-get install --no-install-recommends -yq make gcc gfortran libssl-dev cmake
+RUN sudo apt-get install -yq libopenblas-dev libmpich-dev libblas-dev liblapack-dev libscalapack-mpi-dev libhdf5-mpi-dev hdf5-tools
+RUN sudo apt-get install -yq vim
+RUN sudo apt-get install -yq git-lfs
+RUN sudo apt-get install -yq valgrind
+RUN sudo apt-get install -yq wget
+RUN sudo apt-get install -yq astyle
+
+# install python
+RUN sudo apt-get install -yq python3
+RUN sudo apt-get install -yq python3-dev
+RUN sudo apt-get install -yq python3-pip
+RUN sudo pip3 install --upgrade pip
+RUN sudo pip3 install sphinx-autoapi sphinx_rtd_theme
+#RUN sudo pip3 install numpy scipy argparse tables PyYAML h5py pybind11 pytest mpi4py merlin
+#
+RUN sudo apt-get clean -q
+
+# create and switch to a user
+ENV USERNAME=test
+RUN echo "$USERNAME ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
+RUN useradd --no-log-init -u 1001 --create-home --shell /bin/bash $USERNAME
+RUN adduser $USERNAME sudo
+USER $USERNAME
+WORKDIR /home/$USERNAME