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Add Kasm Docker build workflow
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‎.github/workflows/docker-build.yml‎

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cache-from: type=gha
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cache-to: type=gha,mode=max
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target: runner
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build-kasm:
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runs-on: ubuntu-latest
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needs: build
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steps:
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- name: Checkout
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uses: actions/checkout@v4
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- name: Get latest tool versions
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id: versions
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run: |
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UV_VERSION=$(git ls-remote --tags --sort=-v:refname https://github.com/astral-sh/uv.git 'refs/tags/[0-9]*' | head -1 | sed 's/.*refs\/tags\///')
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OPENCODE_VERSION=$(curl -s https://api.github.com/repos/anomalyco/opencode/releases/latest | sed -n 's/.*"tag_name": *"\([^"]*\)".*/\1/p')
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echo "uv=${UV_VERSION}" >> $GITHUB_OUTPUT
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echo "opencode=${OPENCODE_VERSION}" >> $GITHUB_OUTPUT
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- name: Docker meta (Kasm)
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id: meta-kasm
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uses: docker/metadata-action@v5
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with:
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images: ghcr.io/${{ github.repository }}
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tags: |
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type=semver,pattern={{version}},suffix=-kasm
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type=semver,pattern={{major}}.{{minor}},suffix=-kasm
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type=raw,value=latest-kasm
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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v3
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- name: Login to GHCR
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uses: docker/login-action@v3
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with:
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registry: ghcr.io
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username: ${{ github.actor }}
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password: ${{ secrets.GITHUB_TOKEN }}
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- name: Build and push (Kasm)
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uses: docker/build-push-action@v5
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with:
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context: .
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file: Dockerfile.kasm
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platforms: linux/amd64
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push: true
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tags: ${{ steps.meta-kasm.outputs.tags }}
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labels: ${{ steps.meta-kasm.outputs.labels }}
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build-args: |
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UV_VERSION=${{ steps.versions.outputs.uv }}
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OPENCODE_VERSION=${{ steps.versions.outputs.opencode }}
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cache-from: type=gha
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cache-to: type=gha,mode=max

‎Dockerfile.kasm‎

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FROM kasmweb/core-ubuntu-jammy:1.18.0
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USER root
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ENV HOME /home/kasm-default-profile
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ENV STARTUPDIR /dockerstartup
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ENV INST_SCRIPTS $STARTUPDIR/install
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WORKDIR $HOME
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######### Customize Container Here ###########
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RUN apt-get update && apt-get install -y \
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git \
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curl \
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lsof \
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ripgrep \
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ca-certificates \
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grep \
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gawk \
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sed \
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findutils \
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coreutils \
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procps \
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jq \
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less \
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tree \
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file \
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python3 \
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python3-pip \
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python3-venv \
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chromium-browser \
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unzip \
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&& rm -rf /var/lib/apt/lists/*
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RUN curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg | dd of=/usr/share/keyrings/githubcli-archive-keyring.gpg \
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&& echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | tee /etc/apt/sources.list.d/github-cli.list > /dev/null \
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&& apt-get update && apt-get install -y gh \
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&& rm -rf /var/lib/apt/lists/*
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RUN curl -fsSL https://deb.nodesource.com/setup_24.x | bash - \
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&& apt-get install -y nodejs \
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&& rm -rf /var/lib/apt/lists/*
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RUN corepack enable && corepack prepare pnpm@latest --activate
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RUN curl -fsSL https://bun.sh/install | bash && \
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mv $HOME/.bun /opt/bun && \
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chmod -R 755 /opt/bun && \
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ln -s /opt/bun/bin/bun /usr/local/bin/bun
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ARG UV_VERSION=latest
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ARG OPENCODE_VERSION=latest
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RUN curl -LsSf https://astral.sh/uv/install.sh | UV_NO_MODIFY_PATH=1 sh && \
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mv $HOME/.local/bin/uv /usr/local/bin/uv && \
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mv $HOME/.local/bin/uvx /usr/local/bin/uvx && \
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chmod +x /usr/local/bin/uv /usr/local/bin/uvx && \
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if [ "${OPENCODE_VERSION}" = "latest" ]; then \
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curl -fsSL https://opencode.ai/install | bash -s -- --no-modify-path; \
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else \
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curl -fsSL https://opencode.ai/install | bash -s -- --version ${OPENCODE_VERSION} --no-modify-path; \
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fi && \
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mv $HOME/.opencode /opt/opencode && \
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chmod -R 755 /opt/opencode && \
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ln -s /opt/opencode/bin/opencode /usr/local/bin/opencode
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COPY --from=ghcr.io/chriswritescode-dev/opencode-manager:latest /app /opt/opencode-manager
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COPY --from=ghcr.io/chriswritescode-dev/opencode-manager:latest /opt/opencode-plugins /opt/opencode-plugins
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RUN mkdir -p /workspace /opt/opencode-manager/data && \
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chown -R 1000:0 /workspace /opt/opencode-manager/data /opt/opencode-plugins
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ENV NODE_ENV=production
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ENV HOST=0.0.0.0
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ENV PORT=5003
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ENV OPENCODE_SERVER_PORT=5551
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ENV DATABASE_PATH=/opt/opencode-manager/data/opencode.db
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ENV WORKSPACE_PATH=/workspace
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ENV NODE_PATH=/opt/opencode-plugins/node_modules
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COPY scripts/kasm-startup.sh $STARTUPDIR/custom_startup.sh
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RUN chmod +x $STARTUPDIR/custom_startup.sh
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######### End Customizations ###########
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RUN chown 1000:0 $HOME
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RUN $STARTUPDIR/set_user_permission.sh $HOME
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ENV HOME /home/kasm-user
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WORKDIR $HOME
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RUN mkdir -p $HOME && chown -R 1000:0 $HOME
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USER 1000

‎scripts/kasm-startup.sh‎

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#!/bin/bash
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set -e
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export PATH="/opt/bun/bin:/opt/opencode/bin:/usr/local/bin:$PATH"
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export BUN_INSTALL="/opt/bun"
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START_COMMAND="bun backend/src/index.ts"
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WORK_DIR="/opt/opencode-manager"
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export MAXIMIZE="true"
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export MAXIMIZE_NAME="Chromium"
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MAXIMIZE_SCRIPT=$STARTUPDIR/maximize_window.sh
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/usr/bin/desktop_ready
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if [ -z "$AUTH_SECRET" ]; then
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export AUTH_SECRET=$(openssl rand -base64 32)
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fi
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BROWSER=$(which chromium-browser || which chromium || which google-chrome || echo "")
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set +e
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while true; do
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if ! pgrep -f "$START_COMMAND" > /dev/null; then
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cd "$WORK_DIR"
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$START_COMMAND > /tmp/opencode-manager.log 2>&1 &
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sleep 3
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if [ -n "$BROWSER" ]; then
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if ! pgrep -f "$BROWSER" > /dev/null; then
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bash ${MAXIMIZE_SCRIPT} 2>/dev/null &
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$BROWSER \
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--no-first-run \
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--no-default-browser-check \
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--disable-gpu \
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--start-maximized \
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--window-position=0,0 \
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"http://localhost:5003" &
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fi
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fi
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fi
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sleep 1
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done

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