Configure Renovate

.github/workflows/build-toolchain.yaml

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+---
+name: Build toolchain image
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+concurrency:
+  group: build-toolchain-image
+  cancel-in-progress: true
+
+jobs:
+  build_image:
+    name: Build toolchain image
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to image registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ github.token }}
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            ghcr.io/${{ github.repository_owner }}/kobo-ssh-toolchain
+          tags: |
+            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
+            type=ref,event=branch
+            type=ref,event=tag
+
+      - name: Build image
+        uses: docker/build-push-action@v6
+        id: build
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

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+FROM debian:bookworm
+
+# Build dependencies
+RUN \
+  apt-get update -y \
+  && dpkg --add-architecture armhf \
+  && apt-get update -y \
+  && apt-get install -y \
+    autoconf \
+    autogen \
+    automake \
+    bison \
+    build-essential \
+    cmake \
+    cross-gcc-dev \
+    crossbuild-essential-armhf \
+    curl \
+    file \
+    flex \
+    g++-arm-linux-gnueabihf \
+    gawk \
+    gcc-arm-linux-gnueabihf \
+    git \
+    gperf \
+    help2man \
+    libglu1-mesa-dev \
+    libncurses-dev \
+    libtool \
+    libtool-bin \
+    libtool-doc \
+    libx11-dev \
+    libx11-dev \
+    libxext-dev \
+    libxinerama-dev \
+    mesa-common-dev \
+    nasm \
+    shtool \
+    texinfo \
+    unzip \
+    wget \
+    xorg-dev
+
+# Pull in crosstool-ng
+RUN \
+  git clone https://github.com/NiLuJe/crosstool-ng /crosstool-ng-sources
+
+# Build crosstool-ng
+WORKDIR /crosstool-ng-sources
+RUN \
+  ./bootstrap \
+  && ./configure \
+  && make \
+  && make install
+
+# Set up a temp dir to configure crosstool in
+RUN \
+  mkdir -p /crosstool-cfg \
+  && /crosstool-cfg \
+  && mkdir -p /home/crosstooluser/src \
+  && ct-ng arm-kobo-linux-gnueabihf
+
+# Set up a temp user for crosstool to use
+RUN \
+  echo "CT_EXPERIMENTAL=y\n" >> .config \
+  && echo "CT_ALLOW_BUILD_AS_ROOT=y\n" >> .config \
+  && echo "CT_ALLOW_BUILD_AS_ROOT_SURE=y\n" >> .config \
+  && mkdir -p /root/src \
+  && ct-ng build

README.md

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 # kobo-ssh
 Build pipeline to compile Dropbear for Kobo
+
+Based on the work of https://github.com/obynio/kobopatch-ssh

renovate.json

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+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json"
+}