DOC: docker image CI

.devcontainer/Dockerfile

@@ -1,7 +1,7 @@
 FROM dolfinx/dolfinx:v0.6.0
-# FROM mcr.microsoft.com/devcontainers/base:jammy 
-ARG DEBIAN_FRONTEND=noninteractive
 
+LABEL org.opencontainers.image.source https://github.com/equinor/warmth
+ARG DEBIAN_FRONTEND=noninteractive
 
 RUN DEBIAN_FRONTEND=noninteractive \
     && apt-get update \ 
@@ -24,26 +24,9 @@ RUN DEBIAN_FRONTEND=noninteractive \
         libffi-dev \
         liblzma-dev
 
-# # Python and poetry installation
-# # USER $USER
-# # ARG HOME="/home/$USER"
-
-# # Don't change. Dolfinx in the base image is only compiled with 3.10
-# #ARG PYTHON_VERSION=3.10.6
-
-# # Use poetry pyenv
-# #ENV PYENV_ROOT="${HOME}/.pyenv"
-# #ENV PATH="${PYENV_ROOT}/shims:${PYENV_ROOT}/bin:${HOME}/.local/bin:/root/.local/bin:$PATH"
 RUN useradd  -rm -d /home/vscode -s /bin/bash -g root -G sudo -u 1000 vscode -p ""
-USER vscode
+USER 1000
 WORKDIR /home/vscode
 ENV HOME=/home/vscode
 ENV PATH="/root/.local/bin:$HOME/.local/bin::$PATH"
-RUN echo "done 0" \
-#     # && curl https://pyenv.run | bash \
-#     # && echo "done 1" \
-#     # && pyenv install ${PYTHON_VERSION} \
-#     # && echo "done 2" \
-#     # && pyenv global ${PYTHON_VERSION} \
-#     # && echo "done 3" \
-     && curl -sSL https://install.python-poetry.org | python3 - 
+RUN curl -sSL https://install.python-poetry.org | python3 - 

.github/workflows/build_docker.yml

@@ -0,0 +1,42 @@
+name: Build docker
+
+on:
+  push:
+    branches: [ "main" ]
+    paths:
+      - '.devcontainer/Dockerfile'
+  workflow_dispatch:
+permissions:
+      id-token: write
+      contents: read
+      packages: write
+jobs:
+  build:
+    runs-on: ubuntu-20.04
+
+    steps:
+    - uses: actions/checkout@v3
+    -
+      name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+    -
+      name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+      with:
+        driver-opts: |
+          image=moby/buildkit:v0.11.2
+    -
+      name: Login to GitHub Container Registry
+      uses: docker/login-action@v1 
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+    -
+      name: Build
+      uses: docker/build-push-action@v2
+      with:
+        context: .
+        push: true
+        platforms: linux/amd64
+        tags: ghcr.io/equinor/warmth:latest