opencode-devbox/Dockerfile.variant

# opencode-devbox — variant image
#
# FROMs a base-<hash> image produced by Dockerfile.base and adds only
# the variant-specific tools (opencode, pi, oh-my-opencode-slim, Go).
#
# The four published variants are produced from THIS Dockerfile by
# varying build args:
#
#   variant            INSTALL_OPENCODE  INSTALL_OMOS  INSTALL_PI
#   ─────────────────  ────────────────  ────────────  ──────────
#   base               true              false         false
#   omos               true              true          false
#   with-pi            true              false         true
#   omos-with-pi       true              true          true
#
# Pass `--build-arg BASE_IMAGE=<repo>:base-<hash>` to select the base.
# The CI workflow computes the base hash from Dockerfile.base + rootfs/
# + entrypoint*.sh and feeds it in.
#
# IMPORTANT: the base image sets NPM_CONFIG_PREFIX to
# /home/developer/.pi/npm-global so runtime `pi install npm:...` and
# `npm install -g` by the developer user lands on the named volume.
# At BUILD time we want the baked binaries on /usr so they survive the
# volume mount. Each `npm install -g` below therefore prefixes the
# command with `NPM_CONFIG_PREFIX=/usr`.

ARG BASE_IMAGE
FROM ${BASE_IMAGE}

ARG TARGETARCH
ARG USER_NAME=developer

# ── Install opencode via npm ─────────────────────────────────────────
ARG INSTALL_OPENCODE=true
ARG OPENCODE_VERSION=1.15.10
RUN if [ "${INSTALL_OPENCODE}" = "true" ]; then \
      NPM_CONFIG_PREFIX=/usr npm install -g opencode-ai@${OPENCODE_VERSION} && \
      opencode --version ; \
    fi

# ── Optional: pi coding-agent ────────────────────────────────────────
# pi-toolkit and pi-extensions are cloned into /opt/. entrypoint-user.sh
# runs each repo's install.sh on container start so symlinks land under
# ~/.pi/agent/ on the named volume.
ARG INSTALL_PI=false
ARG PI_VERSION=latest
ARG PI_TOOLKIT_REF=main
ARG PI_EXTENSIONS_REF=main
RUN if [ "${INSTALL_PI}" = "true" ]; then \
      set -e && \
      git_clone_retry() { \
        url="$1"; ref="$2"; dest="$3"; \
        for i in 1 2 3 4 5; do \
          if git clone --depth 1 --branch "$ref" "$url" "$dest"; then return 0; fi; \
          rm -rf "$dest"; \
          echo "git clone $url failed (attempt $i/5), retrying in $((i*5))s..."; \
          sleep $((i*5)); \
        done; \
        return 1; \
      } && \
      if [ "${PI_VERSION}" = "latest" ]; then \
        NPM_CONFIG_PREFIX=/usr npm install -g @earendil-works/pi-coding-agent ; \
      else \
        NPM_CONFIG_PREFIX=/usr npm install -g @earendil-works/pi-coding-agent@${PI_VERSION} ; \
      fi && \
      pi --version && \
      git_clone_retry https://gitea.jordbo.se/joakimp/pi-toolkit.git "${PI_TOOLKIT_REF}" /opt/pi-toolkit && \
      git_clone_retry https://gitea.jordbo.se/joakimp/pi-extensions.git "${PI_EXTENSIONS_REF}" /opt/pi-extensions && \
      echo "pi-toolkit at $(cd /opt/pi-toolkit && git rev-parse --short HEAD)" && \
      echo "pi-extensions at $(cd /opt/pi-extensions && git rev-parse --short HEAD)" ; \
    fi

# ── Optional: Go ─────────────────────────────────────────────────────
ARG INSTALL_GO=false
ARG GO_VERSION=latest
RUN if [ "${INSTALL_GO}" = "true" ]; then \
      GOARCH=$(case "${TARGETARCH}" in amd64) echo "amd64" ;; arm64) echo "arm64" ;; *) echo "amd64" ;; esac) && \
      V="${GO_VERSION}" && \
      if [ "$V" = "latest" ]; then \
        V=$(curl -fsSL --retry 5 --retry-delay 5 --retry-all-errors "https://go.dev/dl/?mode=json" | \
            awk -F'"' '/"version":/ { sub(/^go/,"",$4); print $4; exit }'); \
      fi && \
      [ -n "$V" ] && \
      echo "Installing Go ${V}" && \
      curl -fsSL --retry 5 --retry-delay 5 --retry-all-errors "https://go.dev/dl/go${V}.linux-${GOARCH}.tar.gz" | tar -C /usr/local -xz && \
      ln -s /usr/local/go/bin/go /usr/local/bin/go && \
      ln -s /usr/local/go/bin/gofmt /usr/local/bin/gofmt; \
    fi

# ── Optional: oh-my-opencode-slim (multi-agent orchestration) ────────
# Installs Bun runtime and the oh-my-opencode-slim npm package.
ARG INSTALL_OMOS=false
ARG OMOS_VERSION=latest
RUN if [ "${INSTALL_OMOS}" = "true" ]; then \
      ARCH=$(uname -m) && \
      if [ "$ARCH" = "x86_64" ]; then \
        BUN_ARCH="x64-baseline"; \
      elif [ "$ARCH" = "aarch64" ]; then \
        BUN_ARCH="aarch64"; \
      fi && \
      curl -fsSL --retry 5 --retry-delay 5 --retry-all-errors "https://github.com/oven-sh/bun/releases/latest/download/bun-linux-${BUN_ARCH}.zip" -o /tmp/bun.zip && \
      unzip -o /tmp/bun.zip -d /tmp/bun && \
      mv /tmp/bun/bun-linux-${BUN_ARCH}/bun /usr/local/bin/bun && \
      chmod +x /usr/local/bin/bun && \
      ln -sf bun /usr/local/bin/bunx && \
      rm -rf /tmp/bun /tmp/bun.zip && \
      bun --version && \
      test -L /usr/local/bin/bunx && \
      NPM_CONFIG_PREFIX=/usr npm install -g oh-my-opencode-slim@${OMOS_VERSION}; \
    fi

# WORKDIR / ENTRYPOINT / CMD inherited from base.