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 two published variants are produced from THIS Dockerfile by
# varying build args:
#
#   variant   INSTALL_OPENCODE  INSTALL_OMOS
#   ────────  ────────────────  ────────────
#   base      true              false
#   omos      true              true
#
# pi was removed in v2.0.0 (it had been deprecated since v1.17.2). It now
# ships from its own self-contained image: joakimp/pi-devbox:latest
# (https://gitea.jordbo.se/joakimp/pi-devbox). See docs/CLEANUP-v2.0.0.md
# for the removal history.
#
# 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/.config/opencode/npm-global so runtime `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 ─────────────────────────────────────────
# OPENCODE_VERSION is intentionally pinned in this Dockerfile (not
# 'latest'). It drives the release tag and gets bumped via a source
# edit, so the cache-hit class of bug that bit pi-devbox v0.74.0..
# v0.75.5 cannot apply here.
ARG INSTALL_OPENCODE=true
ARG OPENCODE_VERSION=1.18.13
RUN if [ "${INSTALL_OPENCODE}" = "true" ]; then \
      NPM_CONFIG_PREFIX=/usr npm install -g opencode-ai@${OPENCODE_VERSION} && \
      opencode --version ; \
    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.
# OMOS_VERSION has a cache-hit footgun when left at the `latest` default
# in registry-cached CI builds: the resulting build-arg string is byte-
# identical across builds, so the layer-hash is identical, so the
# registry buildcache silently reuses the layer from whatever omos
# version was current when the cache was first populated. CI resolves it
# via `npm view oh-my-opencode-slim version` and passes the concrete
# value as a build-arg (see resolve-versions in docker-publish-split.yml).
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

# ── Build provenance: OCI labels + on-disk manifest ──────────────────
# These ARGs are declared LAST, immediately before the layer that uses
# them, so a changing BUILD_DATE / RELEASE_TAG / SOURCE_REVISION never
# invalidates the expensive npm-install layers above. OPENCODE_VERSION,
# OMOS_VERSION and INSTALL_OMOS are already in scope from earlier in this
# stage and need no re-declaration; MEMPALACE_TOOLKIT_REF is consumed in
# Dockerfile.base, so it is re-declared here only to land in the labels.
ARG RELEASE_TAG=dev
ARG BUILD_DATE=
ARG SOURCE_REVISION=
ARG MEMPALACE_TOOLKIT_REF=main

LABEL org.opencontainers.image.version="${RELEASE_TAG}" \
      org.opencontainers.image.revision="${SOURCE_REVISION}" \
      org.opencontainers.image.created="${BUILD_DATE}" \
      se.jordbo.opencode-devbox.opencode-version="${OPENCODE_VERSION}" \
      se.jordbo.opencode-devbox.install-omos="${INSTALL_OMOS}" \
      se.jordbo.opencode-devbox.omos-version="${OMOS_VERSION}" \
      se.jordbo.opencode-devbox.mempalace-toolkit-ref="${MEMPALACE_TOOLKIT_REF}"

# The manifest is written from GROUND TRUTH — the live `opencode --version`,
# the omos package's installed version (when present), and the actual
# checked-out HEAD of /opt/mempalace-toolkit (cloned in the base) — not
# merely the intended build-args. That way it also exposes a dependency
# that silently resolved to something other than the requested value.
# oh-my-opencode-slim is present only in the omos variant (JSON null
# otherwise). NOTE: omos is installed under prefix /usr at build time, so
# we resolve its dir via `npm root -g` with that prefix rather than the
# runtime NPM_CONFIG_PREFIX the base sets for the developer volume.
RUN set -e; \
    mkdir -p /etc/opencode-devbox; \
    rev() { git -C "$1" rev-parse HEAD 2>/dev/null || echo "unknown"; }; \
    OPENCODE_V="$(opencode --version 2>/dev/null | head -n1 | tr -d '\r\n')"; \
    OMOS_REV='null'; \
    if [ "${INSTALL_OMOS}" = "true" ]; then \
      OMOS_DIR="$(NPM_CONFIG_PREFIX=/usr npm root -g 2>/dev/null)/oh-my-opencode-slim"; \
      OMOS_V="$(node -e "process.stdout.write(require('${OMOS_DIR}/package.json').version)" 2>/dev/null || echo unknown)"; \
      OMOS_REV="\"${OMOS_V}\""; \
    fi; \
    { \
      echo '{'; \
      echo "  \"release_tag\": \"${RELEASE_TAG}\","; \
      echo "  \"build_date\": \"${BUILD_DATE}\","; \
      echo "  \"source_revision\": \"${SOURCE_REVISION}\","; \
      echo "  \"opencode_version\": \"${OPENCODE_V}\","; \
      echo "  \"components\": {"; \
      echo "    \"opencode\": \"${OPENCODE_V}\","; \
      echo "    \"oh-my-opencode-slim\": ${OMOS_REV},"; \
      echo "    \"mempalace-toolkit\": \"$(rev /opt/mempalace-toolkit)\""; \
      echo "  }"; \
      echo '}'; \
    } > /etc/opencode-devbox/build-manifest.json; \
    echo "── build manifest ──"; cat /etc/opencode-devbox/build-manifest.json

# WORKDIR / ENTRYPOINT / CMD inherited from base.