Basic NCS implementation

* Essentially replace Zephyr SDK w/ NCS SDK

* Basic README

.github/workflows/publish.yml

@@ -0,0 +1,48 @@
+name: NCS development containers
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  base:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write
+
+    strategy:
+      matrix:
+        sdk: [v2.5.0]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log into GitHub Container Registry
+        # if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push base image
+        id: build-and-push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./ncs/Dockerfile
+          # push: ${{ github.event_name != 'pull_request' }}
+          push: true
+          platforms: linux/amd64
+          provenance: false
+          tags: ghcr.io/${{ github.repository_owner }}/ncs:${{ matrix.sdk }}SDK
+          build-args: |
+            NCS_SDK_VERSION=${{ matrix.sdk }}

README.md

@@ -1,2 +1,18 @@
-# ncs
-Performance-optimized container images for building Nordic nRF Connect SDK applications.
+# NCS Container Images
+
+Develop nRF Connect SDK (NCS) applications using OCI-compatible Docker images.
+
+# Getting container images
+
+## Build images locally
+
+Building images locally ensures you can trust the source of the image, as well as allow you to modify the container image configuration.
+
+### Building with Docker CLI
+
+_Build the image_
+
+```
+docker build --build-arg NCS_SDK_VERSION=v2.5.0 -f "./ncs/Dockerfile" -t ncs:v2.5.0SDK "./ncs"
+
+```

ncs/Dockerfile

@@ -0,0 +1,48 @@
+FROM debian:stable-slim
+
+ARG NCS_SDK_VERSION=v2.5.0
+
+# OS dependencies and packages
+
+RUN \
+  apt-get -y update \
+  && apt-get -y install --no-install-recommends \
+  ca-certificates \
+  cmake \
+  device-tree-compiler \
+  git \
+  ninja-build \
+  && apt-get clean \
+  && rm -rf /var/lib/apt/lists/*
+
+# NCS SDK
+
+RUN \
+  apt-get -y update \
+  && apt-get -y install --no-install-recommends \
+  wget \
+  && wget https://developer.nordicsemi.com/.pc-tools/nrfutil/x64-linux/nrfutil \
+  && chmod +x nrfutil \
+  && mv nrfutil /usr/bin \
+  && nrfutil install toolchain-manager \
+  && nrfutil toolchain-manager install --ncs-version ${NCS_SDK_VERSION} \
+  && apt-get remove -y --purge \
+  wget \
+  && apt-get clean \
+  && rm -rf /var/lib/apt/lists/*
+
+# Python
+
+ENV VIRTUAL_ENV=/opt/venv
+RUN \
+  apt-get -y update \
+  && apt-get -y install --no-install-recommends \
+  python3 \
+  python3-pip \
+  python3-venv \
+  && python3 -m venv $VIRTUAL_ENV
+ENV PATH="$VIRTUAL_ENV/bin:$PATH"
+
+# West
+
+RUN pip install --no-cache-dir wheel west