litellm/Dockerfile
Yassin Kortam 35dc982692
feat(proxy): add SAML 2.0 SSO for the admin UI (#31429)
litellm already supports Google, Microsoft and generic OIDC SSO through
fastapi-sso, which has no SAML support; AuthMethod.SAML existed only as an
unused enum value. This adds real SAML 2.0 single sign-on for the admin UI.

A new SAMLAuthHandler validates signed assertions with the OneLogin
python3-saml toolkit and maps them onto a CustomOpenID, then reuses the
shared post-login path every other provider goes through, so provisioning,
role/team mapping and the UI session JWT are unchanged. Both SP-initiated
and IdP-initiated HTTP-POST flows are supported. SP-initiated logins are
bound to the browser that started them via an HttpOnly state cookie plus a
cached AuthnRequest id, and the ACS rejects any response whose InResponseTo
doesn't match; unsolicited (IdP-initiated) responses cannot be browser-bound
so they are rejected unless SAML_ALLOW_UNSOLICITED=true. Replays are rejected
by a consumed-assertion guard whose lifetime tracks each assertion's
NotOnOrAfter, and both the replay guard and the login-state binding go
through the proxy's shared in-memory + Redis cache for multi-instance
deployments. The ACS honors DISABLE_ADMIN_UI and re-applies the
free-SSO-user Enterprise gate after the assertion is validated, so an
unvalidated POST can no longer drive the billable-user count query.

SAML is configurable from the admin UI SSO settings (IdP metadata URL or
inline XML, SP entity ID, and an allow-unsolicited toggle), which persists
the SAML_* environment variables the handler reads, exactly like the Google,
Microsoft and generic OIDC providers.

python3-saml is kept as an optional saml extra; its xmlsec and lxml wheels
bundle the native libraries so no system packages are required, and the
import is guarded so the proxy still starts without the package with the
SAML routes returning a clear 501.

Resolves LIT-4016
2026-07-24 12:51:28 -07:00

142 lines
5.3 KiB
Docker

# syntax=docker/dockerfile:1.7
# Base image for building
ARG LITELLM_BUILD_IMAGE=cgr.dev/chainguard/wolfi-base@sha256:42df77a9974d6ec8b17a5ee8bc23b532600a44d705acef2409e0933c1251b45f
# Runtime image
ARG LITELLM_RUNTIME_IMAGE=cgr.dev/chainguard/wolfi-base@sha256:42df77a9974d6ec8b17a5ee8bc23b532600a44d705acef2409e0933c1251b45f
ARG UV_IMAGE=ghcr.io/astral-sh/uv:0.11.7@sha256:240fb85ab0f263ef12f492d8476aa3a2e4e1e333f7d67fbdd923d00a506a516a
# Pinned by digest like the other base images; bump explicitly on Node upgrades.
ARG UI_BUILD_IMAGE=node:20.18-alpine3.20@sha256:3488b10bf958af7125a176419d2d8a9937d895bf124012aae811651988d2ffe6
FROM $UV_IMAGE AS uvbin
# Admin UI builder. Pinned to the build platform so the architecture-independent
# Next.js static export compiles once natively even in a multi-arch build,
# instead of once per target arch under QEMU.
FROM --platform=$BUILDPLATFORM $UI_BUILD_IMAGE AS ui-builder
ENV NEXT_TELEMETRY_DISABLED=1 \
npm_config_fund=false \
npm_config_audit=false
WORKDIR /ui
COPY ui/litellm-dashboard/package.json ui/litellm-dashboard/package-lock.json ./
RUN --mount=type=cache,target=/root/.npm npm ci --prefer-offline
COPY ui/litellm-dashboard/ ./
RUN npm run build
# Builder stage
FROM $LITELLM_BUILD_IMAGE AS builder
WORKDIR /app
USER root
COPY --from=uvbin /uv /usr/local/bin/uv
COPY --from=uvbin /uvx /usr/local/bin/uvx
RUN apk add --no-cache \
bash \
gcc \
python3 \
python3-dev \
rust \
openssl \
openssl-dev \
nodejs \
npm \
libsndfile
ENV UV_PROJECT_ENVIRONMENT=/app/.venv \
UV_LINK_MODE=copy \
PATH="/app/.venv/bin:${PATH}"
# Copy dependency metadata first for layer caching
COPY pyproject.toml uv.lock ./
COPY enterprise/pyproject.toml enterprise/
COPY litellm-proxy-extras/pyproject.toml litellm-proxy-extras/
# Install third-party dependencies (cached unless pyproject.toml/uv.lock change)
RUN uv sync --frozen --no-install-project --no-install-workspace --no-default-groups --no-editable \
--extra proxy \
--extra proxy-runtime \
--extra extra_proxy \
--extra semantic-router \
--extra saml \
--python python3
# Copy full source tree
COPY . .
# Replace the committed UI bundle with the one built from this exact source.
# Clearing first drops the committed bundle's content-hashed chunks that COPY
# would otherwise leave behind alongside the fresh ones.
RUN rm -rf litellm/proxy/_experimental/out
COPY --from=ui-builder /ui/out/. litellm/proxy/_experimental/out/
# Build Admin UI before final sync (applies the enterprise color override when present)
RUN sed -i 's/\r$//' docker/build_admin_ui.sh && chmod +x docker/build_admin_ui.sh && ./docker/build_admin_ui.sh
# Install project and workspace packages (fast - deps already cached)
RUN uv sync --frozen --no-default-groups --no-editable \
--extra proxy \
--extra proxy-runtime \
--extra extra_proxy \
--extra semantic-router \
--extra saml \
--python python3
RUN HOME=/opt/prisma XDG_CACHE_HOME=/opt/prisma/.cache PRISMA_BINARY_CACHE_DIR=/opt/prisma/binaries \
npm_config_cache=/root/.npm \
prisma generate --schema=./schema.prisma
RUN sed -i 's/\r$//' docker/entrypoint.sh && chmod +x docker/entrypoint.sh && \
sed -i 's/\r$//' docker/prod_entrypoint.sh && chmod +x docker/prod_entrypoint.sh
# Runtime stage
FROM $LITELLM_RUNTIME_IMAGE AS runtime
USER root
# node (without npm) is required by the prisma CLI at runtime
RUN apk add --no-cache bash openssl tzdata nodejs python3 libsndfile
WORKDIR /app
ENV PATH="/app/.venv/bin:${PATH}" \
PRISMA_BINARY_CACHE_DIR=/opt/prisma/binaries \
PRISMA_CLI_PATH=/opt/prisma/binaries/node_modules/.bin/prisma \
PRISMA_CLI_QUERY_ENGINE_TYPE=binary \
PRISMA_OFFLINE_MODE=true
# Copy only what runtime needs. The application is installed inside the venv;
# the rest of the builder's /app is source and build metadata that must not
# ship (manifest-scanning tools attribute everything in it to this image).
# entrypoint.sh invokes litellm/proxy/prisma_migration.py by source path.
COPY --from=builder /app/.venv /app/.venv
COPY --from=builder /app/docker /app/docker
COPY --from=builder /app/schema.prisma /app/schema.prisma
COPY --from=builder /app/litellm/proxy/prisma_migration.py /app/litellm/proxy/prisma_migration.py
# enterprise/ is imported by source path at runtime (proxy_cli puts the
# working directory on sys.path; litellm/proxy/hooks resolves
# enterprise.enterprise_hooks from it)
COPY --from=builder /app/enterprise /app/enterprise
COPY --from=builder /app/litellm-proxy-extras /app/litellm-proxy-extras
# Prisma CLI + engines are baked under /opt/prisma, a fixed path every
# runtime uid can read and that no cache volume mount shadows. The paths are
# pinned via PRISMA_BINARY_CACHE_DIR / PRISMA_CLI_PATH and recorded into the
# generated client at build time, so `prisma migrate deploy` on a fresh
# database needs no npm and no network access (#33650, #24554).
COPY --from=builder /opt/prisma /opt/prisma
RUN find /app/.venv -type f -path "*/tornado/test/*" -delete && \
find /app/.venv -type d -path "*/tornado/test" -delete && \
chmod -R a+rX /opt/prisma && \
test -x /opt/prisma/binaries/node_modules/.bin/prisma && \
test -f /opt/prisma/binaries/node_modules/prisma/build/index.js
EXPOSE 4000/tcp
ENTRYPOINT ["docker/prod_entrypoint.sh"]
CMD ["--port", "4000"]