Files
proxy/Dockerfile
T
wmantly c68fcc9ddb Fix Docker sticky footer, commit hash, and configurable local admin password (#133)
* Fix TLS handshake failure for any host without a cached target

Reported: fallback SSL doesn't work in the Docker build. Reproduced —
it's worse than the fallback specifically: TLS was broken for nearly
every connection, including ones with no SNI at all:

  $ curl -vk https://127.0.0.1/
  * TLSv1.3 (IN), TLS alert, internal error (592)
  * OpenSSL/3.0.13: error:0A000438:SSL routines::tlsv1 alert internal error

Root cause: targetinfo.lua's M.get() is shared by two call sites in
two incompatible nginx phases —

  - proxy.conf's access_by_lua_block (a normal HTTP request phase,
    where ngx.exit() is valid)
  - nginx.conf's request_domain callback, which runs during the TLS
    handshake itself (ssl_certificate_by_lua*), where ngx.exit() is
    NOT a supported API

M.get() called ngx.exit() on every lookup failure (no domain/SNI, a
Redis error, or an unregistered host). When invoked from the SSL
phase, that aborted the handshake with a bare "internal error" alert
and produced no log output anywhere — silent and total, not limited
to the unregistered-domain case, since even a connection with no SNI
hits the same code path immediately.

Fix: M.get() no longer calls ngx.exit() itself — it returns
(nil, httpStatus) on failure. proxy.conf now checks the return value
and calls ngx.exit() itself (the phase where that's actually
supported). nginx.conf's request_domain guards the now-possibly-nil
result before indexing it, and leaves ngx.ctx.toAllow unset on
failure so allow_domain() correctly denies issuance and auto-ssl
falls through to the static fallback cert in autossl.conf.

Verified end to end against a running Docker build (deployed the
changed files into a live container and reloaded, rather than relying
on a full rebuild each iteration):
- No SNI at all: TLS now completes; HTTP layer correctly returns 406
  (previously: broken handshake, no response at all)
- Unregistered SNI: same — TLS completes, 406, and openssl s_client
  confirms the cert served is genuinely the fallback
  (CN=sni-support-required-for-valid-ssl)
- A real registered Host: TLS completes and proxies through to the
  backend correctly (confirms the success path is unaffected)
- npm test: 192/192 pass

* Fix footer not sticking to the bottom on short pages

body had no sticky-footer layout at all (sso-manager-node already had
this; proxy never did), so on any page with little content (e.g.
/login) the footer sat right after the content instead of at the
bottom of the viewport, leaving a large gap below it.

Added the same flex-based pattern already used in sso-manager-node:
body is a column flex container, #spa-shell grows to fill the
remaining space, pushing the footer (the next sibling) to the bottom.

Verified visually (screenshot) and via computed layout
(footer.getBoundingClientRect().bottom === window.innerHeight) before
and after.

* Fix commit hash not showing in Docker builds

build_info.js computed buildHash via `git rev-parse --short HEAD` at
runtime, but the final image intentionally has no git binary and no
.git directory (kept lean, per .dockerignore) — so this always failed
silently and the footer's version line showed "unknown" for every
Docker deployment. Working correctly only for bare-metal/dev, where
git + .git are actually present.

Added a throwaway gitinfo build stage that reuses the main base image
(no extra pull) with git installed just for this stage, reads .git
from the build context (now no longer excluded — see .dockerignore),
and bakes the resolved short hash into a small file that IS copied
into the final image. build_info.js reads that file first, falling
back to the old git-rev-parse behavior (still needed for bare-metal).

Verified against a real build: `docker exec proxy cat
/app/.build_commit` matches `git rev-parse --short HEAD` on the host,
and the footer now shows the real hash instead of "unknown".

* Allow the local anti-lockout admin's initial password to be configured

The local "proxyadmin2" bootstrap account was always created with
username == password == "proxyadmin2" — a hardcoded, publicly-known
default with no way to set it to something else before first boot.
Fine for a quick local test, not for anything exposed publicly, and
orchestrators like theta-env's setup.sh (which already generates a
random password for the SSO admin) had no way to do the same here.

Added conf.auth.localAdminPass (proxy-secrets.js / app_auth__localAdminPass):
if set, it's used as the initial password instead of the hardcoded
default. Only read on first creation — once the account exists this
is never consulted again, so it's safe to leave set. Falls back to
the previous behavior (password == username) when unset, so this is
fully backward compatible.

Verified: with app_auth__localAdminPass set, login with the new
password succeeds and the old default ("proxyadmin2") is correctly
rejected. Confirmed in a real Docker build too (secrets.js
auth.localAdminPass), and npm test 192/192 pass.

* Support GIT_COMMIT build-arg override for submodule builds

The gitinfo stage from the previous commit works for a standalone
clone (.git is a real directory) but not when this repo is built as a
git submodule (e.g. from theta-env): a submodule's .git is a pointer
FILE, not a directory — the real object database lives in the
superproject's .git/modules/, outside this repo's own directory and
therefore outside Docker's build context entirely. `git rev-parse`
can never resolve it from in here no matter what, so builds via
theta-env still baked in "unknown" despite the earlier fix.

Add an optional GIT_COMMIT build-arg that, when set, wins over the
in-context git resolution. theta-env's setup.sh now computes it on the
host (where the submodule DOES resolve correctly) and passes it via
docker-compose.yml's build.args.

Verified via theta-env's actual setup.sh end to end: rebuilding with
this change, `docker exec proxy cat /app/.build_commit` now matches
`git -C proxy rev-parse --short HEAD` on the host (previously:
"unknown", confirmed via the "[Warning] One or more build-args
[GIT_COMMIT] were not consumed" message before this fix synced into
the docker-compose.yml side).
2026-07-14 22:32:24 -04:00

163 lines
9.3 KiB
Docker

# Theta42 Proxy — All-in-One Dockerfile
# OpenResty (front) + Node management app + Redis in a single container, mirroring
# the bare-metal ops/install.sh layout. Intended for self-contained single-node
# deployments (home labs / small businesses). Each process is supervised by
# dumb-init (PID 1); redis + the node app run in the background and OpenResty
# runs in the foreground as the primary process.
#
# Base image: the official openresty/openresty "-fat" variant bundles luarocks
# preconfigured for OpenResty's luajit, so `luarocks install` places rocks into
# /usr/local/openresty/lualib (which is on OpenResty's package.path) — no manual
# --lua-dir/--tree wrangling needed.
# ── Git commit hash (build-time only) ────────────────────────────────────────
# The final image intentionally has no git binary and no .git directory (kept
# lean, per .dockerignore), so `git rev-parse` always fails at runtime and
# build_info.js silently fell back to "unknown". Resolve it here instead,
# where .git IS available (build context), and bake just the short hash into
# a file — this stage itself is discarded, only /commit.txt survives via the
# COPY --from below. Reuses the main base image (already pulled for the real
# build below) rather than a separate one, so this adds no extra image pull.
#
# GIT_COMMIT lets a caller override the resolved hash instead of computing it
# from .git in this build context. Needed when this repo is built as a git
# submodule (e.g. from theta-env): a submodule's .git is a pointer FILE, not
# a directory — the real object database lives in the superproject's
# .git/modules/, outside this repo's own directory and therefore outside
# Docker's build context entirely, so `git rev-parse` can never resolve it
# from in here no matter what. theta-env's setup.sh passes
# --build-arg GIT_COMMIT=$(git -C proxy rev-parse --short HEAD), computed on
# the host where the submodule resolves correctly.
ARG GIT_COMMIT=""
FROM openresty/openresty:1.31.1.1-2-bookworm-fat AS gitinfo
ARG GIT_COMMIT
WORKDIR /repo
COPY .git ./.git
RUN if [ -n "$GIT_COMMIT" ]; then \
echo "$GIT_COMMIT" > /commit.txt; \
else \
{ apt-get update && apt-get install -y --no-install-recommends git \
&& git rev-parse --short HEAD > /commit.txt; } 2>/dev/null || echo unknown > /commit.txt; \
fi
FROM openresty/openresty:1.31.1.1-2-bookworm-fat
# ── Tooling needed before adding apt repos ──────────────────────────────────
# The -fat base image lacks gnupg, which the NodeSource keyring setup needs.
RUN apt-get update \
&& apt-get install -y --no-install-recommends curl gnupg ca-certificates \
&& rm -rf /var/lib/apt/lists/*
# ── Node.js 22.x (NodeSource) ────────────────────────────────────────────────
# The management app + its native deps (bcrypt) need Node. Matches
# ops/install.sh NODE_MAJOR=22.
RUN install -d -m 0755 /etc/apt/keyrings \
&& curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key \
| gpg --dearmor --yes -o /etc/apt/keyrings/nodesource.gpg \
&& echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_22.x nodistro main" \
> /etc/apt/sources.list.d/nodesource.list
# ── System packages ──────────────────────────────────────────────────────────
# build-essential g++ make python3 : native addon build for bcrypt
# libpam0g-dev : native build for linux-sys-user
# redis-server : bundled Redis (the app + lua-resty-auto-ssl
# + targetinfo.lua all reach 127.0.0.1:6379)
# dumb-init : PID 1 zombie reaping + signal forwarding
# openssl lsb-release wget : tooling
# nodejs : Node 22.x runtime
# luarocks ships in the -fat base image (configured for OpenResty's luajit).
RUN apt-get update \
&& apt-get install -y --no-install-recommends \
build-essential g++ make python3 \
libpam0g-dev \
redis-server \
dumb-init \
openssl lsb-release wget \
nodejs \
&& rm -rf /var/lib/apt/lists/*
# ── Lua modules ──────────────────────────────────────────────────────────────
# lua-resty-auto-ssl : Let's Encrypt automation (certs stored in the bundled redis)
# luasocket : socket helpers used by auto-ssl
# lua-resty-ipmatcher: CIDR matching for per-host IP allow/deny (hostfeatures.lua)
# resty.limit.req is bundled with OpenResty, so no rock is needed for it.
RUN luarocks install lua-resty-auto-ssl \
&& luarocks install luasocket \
&& luarocks install lua-resty-ipmatcher
# ── Node app ─────────────────────────────────────────────────────────────────
WORKDIR /app
# Install production deps first (layer cache: only rebuilds when package*.json
# changes). .dockerignore excludes nodejs/node_modules.
COPY nodejs/package*.json ./
RUN npm ci --omit=dev
# App source (mirror sso-manager's layout — flattened into /app).
COPY nodejs/app.js ./
COPY nodejs/bin ./bin
COPY nodejs/conf ./conf
COPY nodejs/controller ./controller
COPY nodejs/middleware ./middleware
COPY nodejs/migrations ./migrations
COPY nodejs/models ./models
COPY nodejs/routes ./routes
COPY nodejs/services ./services
COPY nodejs/utils ./utils
COPY nodejs/views ./views
COPY nodejs/public ./public
# Baked commit hash from the gitinfo stage (see build_info.js).
COPY --from=gitinfo /commit.txt ./.build_commit
# ── OpenResty config (mirrors ops/install.sh symlink targets) ─────────────────
# The default OpenResty config lives at /usr/local/openresty/nginx/conf/nginx.conf
# (the prefix conf dir); relative `include` directives resolve there. We place:
# nginx.conf -> prefix conf dir (overwrites the stock config)
# autossl.conf -> prefix conf dir (included by proxy.conf)
# proxy.conf -> prefix conf dir/sites-enabled/000-proxy (included by nginx.conf)
# *.lua -> /usr/local/openresty/lualib (on OpenResty's package.path)
# The entrypoint sed-substitutes the env-specific real_ip/resolver values into
# the copied files at runtime, so the committed confs (which carry the bare-metal
# home-LAN values) are left untouched for bare-metal use.
RUN install -d /usr/local/openresty/nginx/conf/sites-enabled
COPY ops/nginx_conf/nginx.conf /usr/local/openresty/nginx/conf/nginx.conf
COPY ops/nginx_conf/autossl.conf /usr/local/openresty/nginx/conf/autossl.conf
COPY ops/nginx_conf/proxy.conf /usr/local/openresty/nginx/conf/sites-enabled/000-proxy
COPY ops/nginx_conf/targetinfo.lua /usr/local/openresty/lualib/targetinfo.lua
COPY ops/nginx_conf/hostfeatures.lua /usr/local/openresty/lualib/hostfeatures.lua
# ── Runtime dirs ─────────────────────────────────────────────────────────────
# nginx.conf writes access/error logs to /var/log/nginx and uses a response
# cache at /var/cache/nginx/proxy. OpenResty workers run as `nobody` (the
# compiled-in default — nginx.conf leaves `user` commented), so the cache dir
# must be owned by nobody:nogroup for proxy_cache_path to write to it. The node
# app creates /var/run/proxy_lookup.socket and chmods it 777 so the nobody
# workers can connect (see utils/unix_socket_json.js).
RUN install -d -m 0755 -o nobody -g nogroup /var/cache/nginx/proxy \
&& install -d /var/log/nginx /var/run /etc/ssl
# ── Entrypoint ───────────────────────────────────────────────────────────────
COPY docker-entrypoint.sh /usr/local/bin/
RUN chmod +x /usr/local/bin/docker-entrypoint.sh
# 80/443/4443 : public proxy listeners (autossl.conf)
# 3000 : node management API + web UI (internal; the OpenResty front
# proxies /api/* and the UI. Expose it for first-run access /
# healthcheck — bind to localhost only in production via compose.)
EXPOSE 80 443 4443 3000
# Healthcheck: the node app's /health (added in routes/render.js). Confirms the
# management process is up and routing; OpenResty liveness is implied because it
# proxies /api/auth -> the node app.
HEALTHCHECK --interval=30s --timeout=5s --start-period=30s --retries=3 \
CMD curl -fsS http://localhost:3000/health || exit 1
# dumb-init reaps zombies and forwards SIGTERM to the OpenResty process the
# entrypoint execs into, so `docker stop` shuts down cleanly instead of hitting
# the 10s kill timeout.
ENTRYPOINT ["dumb-init", "/usr/local/bin/docker-entrypoint.sh"]
# The entrypoint starts redis + the node app in the background, then execs
# `openresty -g 'daemon off;'` in the foreground as the primary process.
CMD ["openresty", "-g", "daemon off;"]