Add docker image.

Author: fnando

.github/workflows/docker.yml

@@ -0,0 +1,44 @@
+---
+name: Image
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - Dockerfile
+  workflow_dispatch:
+    inputs:
+      ref:
+        description: "Git ref to build the image from"
+        required: false
+        default: "main"
+
+concurrency:
+  group: image-workflow
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.inputs.ref }}
+
+      - run: >
+          echo "IMAGE_TAG=${{ (inputs.ref || github.ref_name) == 'main' &&
+          'latest' || (inputs.ref || github.ref_name) }}" >> $GITHUB_ENV
+
+      - name: Build Docker Image
+        run: |
+          docker build -t fnando/screenkit:${{ env.IMAGE_TAG }} .
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
+
+      - name: Push Docker Image
+        run: |
+          docker push fnando/screenkit:${{ env.IMAGE_TAG }}

Dockerfile

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+# Stage 1: Download and extract fonts
+FROM --platform=linux/amd64 alpine:latest AS fonts
+RUN apk add --no-cache curl unzip
+RUN mkdir /fonts && \
+    curl -sSL -o JetBrainsMono.zip https://github.com/ryanoasis/nerd-fonts/releases/download/v3.4.0/JetBrainsMono.zip && \
+    unzip -j JetBrainsMono.zip 'JetBrainsMonoNerdFontPropo-*.ttf' -d /fonts
+
+# Stage 2: Download binaries
+FROM --platform=linux/amd64 alpine:latest AS binaries
+ARG SLIDES_VERSION=0.9.0
+ARG TTYD_VERSION=1.7.7
+ARG LL_VERSION=0.0.11
+ARG BAT_VERSION=0.26.0
+RUN apk add --no-cache curl
+RUN mkdir /bin-download && cd /bin-download && \
+    curl -sSL https://github.com/maaslalani/slides/releases/download/v${SLIDES_VERSION}/slides_${SLIDES_VERSION}_linux_amd64.tar.gz | tar xz && \
+    curl -sSL https://github.com/tsl0922/ttyd/releases/download/${TTYD_VERSION}/ttyd.x86_64 > ttyd && \
+    curl -sSL https://github.com/fnando/ll/releases/download/v${LL_VERSION}/ll-x86_64-unknown-linux-gnu.tar.gz | tar xz && \
+    curl -sSL https://github.com/sharkdp/bat/releases/download/v${BAT_VERSION}/bat-v${BAT_VERSION}-x86_64-unknown-linux-musl.tar.gz | tar xz && \
+    mv bat-v${BAT_VERSION}-x86_64-unknown-linux-musl/bat . && \
+    chmod +x slides ttyd ll bat
+
+# Stage 3: Final image
+FROM --platform=linux/amd64 ruby:3.4-alpine
+
+# Install runtime dependencies and build tools
+RUN apk add --no-cache \
+    --repository=http://dl-cdn.alpinelinux.org/alpine/edge/main \
+    --repository=http://dl-cdn.alpinelinux.org/alpine/edge/community \
+    bash \
+    bash-completion \
+    build-base \
+    ca-certificates \
+    chromium \
+    chromium-chromedriver \
+    curl \
+    fish \
+    ffmpeg \
+    font-liberation \
+    font-noto \
+    font-noto-emoji \
+    freetype \
+    git \
+    gtk+3.0 \
+    harfbuzz \
+    imagemagick \
+    jq \
+    less \
+    mesa-gl \
+    nss \
+    python3 \
+    py3-pip \
+    py3-virtualenv \
+    sudo \
+    ttf-dejavu \
+    ttf-freefont \
+    udev \
+    zsh \
+    && fc-cache -f
+
+ARG USER=screenkit
+ENV TERM=xterm-256color
+ENV PATH="/venv/bin:/source/bin:/${USER}/bin:$PATH"
+ENV CHROME_BIN=/usr/bin/chromium-browser
+ENV CHROME_PATH=/usr/lib/chromium/
+
+# Copy binaries and fonts from builder stages
+COPY --from=binaries /bin-download/slides /usr/local/bin/slides
+COPY --from=binaries /bin-download/ttyd /usr/local/bin/ttyd
+COPY --from=binaries /bin-download/ll /usr/local/bin/ll
+COPY --from=binaries /bin-download/bat /usr/local/bin/bat
+COPY --from=fonts /fonts /usr/local/share/fonts
+
+# Update font cache
+RUN fc-cache -f
+
+# Create user
+RUN adduser -D -h /${USER} -s /bin/zsh -u 1001 ${USER} \
+    && chown -R ${USER}:${USER} /${USER} \
+    && echo "${USER} ALL=(ALL) NOPASSWD:ALL" > /etc/sudoers.d/${USER} \
+    && chmod 0440 /etc/sudoers.d/${USER}
+
+RUN mkdir -p /venv && chown -R ${USER}:${USER} /venv
+RUN mkdir -p /${USER}-local && chown -R ${USER}:${USER} /${USER}-local
+
+# Install screenkit gem
+RUN gem install screenkit && \
+    mkdir -p /usr/share/bash-completion/completions && \
+    mkdir -p /usr/share/zsh/site-functions && \
+    mkdir -p /usr/share/fish/vendor_completions.d && \
+    screenkit completion --shell bash > /usr/share/bash-completion/completions/screenkit && \
+    screenkit completion --shell zsh > /usr/share/zsh/site-functions/_screenkit && \
+    screenkit completion --shell fish > /usr/share/fish/vendor_completions.d/screenkit.fish && \
+    echo 'autoload -Uz compinit && compinit' >> /etc/zsh/zshrc && \
+    echo 'source /usr/share/bash-completion/bash_completion' >> /etc/bash/bashrc && \
+    apk del build-base
+
+USER ${USER}
+WORKDIR /${USER}
+
+# Create Python virtual environment
+RUN python3 -m venv /venv
+RUN /venv/bin/pip install ffmpeg-normalize
+
+WORKDIR /source
+
+ENTRYPOINT [ "screenkit" ]