.env.example

# Copy this file to ".env" and adjust for your setup, then: docker compose up -d
#
# ── Local testing (default) ────────────────────────────────────────────────
# Works out of the box on the machine running Docker. Open http://localhost:8080
RP_ID=localhost
ORIGIN=http://localhost:8080
WEB_PORT=8080
RP_NAME=openGym

# ── Real deployment behind your own HTTPS domain ───────────────────────────
# Passkeys are bound to the exact hostname, and browsers only allow them over
# HTTPS (localhost is the one exception). Put openGym behind a reverse proxy /
# tunnel that terminates TLS for your domain, then set:
#
#   RP_ID=gym.example.com
#   ORIGIN=https://gym.example.com
#   WEB_PORT=8080
#   RP_NAME=openGym
#
# (Point your proxy at the web container's WEB_PORT. See docs/SELF_HOSTING.md.)

# ── Admin dashboard & invite-only signup (optional) ────────────────────────
# Both off by default — a fresh instance has open signup and no admin.
#
# Make yourself an admin: register your own passkey profile first, find your
# user id in ./data/db.json ("users"[].id), then list it here (comma-separated
# for several admins). Admins get an "Admin dashboard" link in Settings to see
# users, disable accounts, generate invite codes and view workout history.
#
#   ADMIN_UIDS=youruserid,anotheradmin
#
# Require an invite code to create new profiles (existing accounts keep working;
# generate the codes from the admin dashboard):
#
#   INVITE_ONLY=1
#
# Remove the "Continue without account" button, so a profile is the only way in.
# Guest mode keeps everything in the browser and never touches this server, but
# on an instance meant for a known set of people it is still the wrong front
# door. Anyone already inside as a guest is signed out on their next visit; the
# data they made stays in that browser. Defaults to on (guests allowed):
#
#   ALLOW_GUEST=0

# ── Default language (optional) ────────────────────────────────────────────
# For an instance whose people share a language: the sign-in screen, and every
# profile that has never picked a language in Settings, start in this one
# instead of English (or the browser's language). Anyone's own choice in
# Settings still wins. Use a code from Settings → Language: en, de, de-CH, es,
# fr, it, pt, pt-BR, pl, tr, ru, uk, zh, ko, hi, th, hu, ar.
#
#   DEFAULT_LANG=pt-BR

# ── Password sign-in (optional, off by default) ────────────────────────────
# Lets people sign in with their profile name and a password next to passkeys:
# for browsers that cannot make a passkey (plain http:// on a LAN address, some
# Firefox setups) and for recovery — an admin can hand out a one-time reset
# code from the dashboard. Nobody has a password until they set one in
# Settings. Passkeys stay the default and the safer choice; read
# docs/SELF_HOSTING.md ("Password sign-in") before turning this on.
#
#   PASSWORD_LOGIN=1
#
# Wrong passwords are throttled per name and per address. The address is read
# from X-Forwarded-For / CF-Connecting-IP only when TRUST_PROXY is on; the
# bundled docker-compose.yml turns it on, because there the API is reachable
# only through the web container, which overwrites those headers. Running the
# API some other way, leave it off unless whatever sits in front overwrites
# (never appends to or passes through) those headers:
#
#   TRUST_PROXY=1

# ── Activity log (optional) ────────────────────────────────────────────────
# The admin dashboard shows an activity log: who signed in, who tried and
# failed, and every admin action (disabling an account, creating or revoking an
# invite code). It lives in ./data/audit.log, one JSON object per line, so you
# can also just read it with `tail` or `jq`.
#
# It is ON by default. It records strictly less than this instance already
# holds — every profile is in db.json and every workout is in state-<uid>.json,
# both readable by any admin — and a log that ships switched off tells you
# nothing on the day you need it. Turn it off completely with:
#
#   AUDIT_LOG=0
#
# Retention is a cap, not an archive. Whichever limit is reached first wins;
# set either to 0 to disable that limit:
#
#   AUDIT_MAX=5000            # events kept
#   AUDIT_DAYS=90             # days kept
#
# IP addresses are the one thing that is OFF unless you ask, because they are
# the only field here that says where somebody physically is. They are also the
# only way to tell one failed sign-in from twenty. Three settings:
#
#   AUDIT_IP=off              # default — no addresses at all
#   AUDIT_IP=net              # network only: 203.0.113.0/24, 2001:db8:1::/48
#   AUDIT_IP=full             # the whole address
#
# The address is read from CF-Connecting-IP, then the first entry of
# X-Forwarded-For, then X-Real-IP, and finally the connecting socket itself if
# none of those is present.
#
# A forwarded-for header is only worth anything if whatever sits in front
# OVERWRITES it instead of passing a client-supplied one through — otherwise a
# caller simply states the address it would like logged. The web container now
# overwrites X-Forwarded-For and X-Real-IP with the real peer, and DROPS
# CF-Connecting-IP, so the bundled stack records an address nobody can choose.
# (Before, X-Forwarded-For was appended to rather than replaced, and
# CF-Connecting-IP was passed straight through — both were forgeable.)
#
# Cloudflare is first in that list on purpose: a Cloudflare tunnel does not put
# the visitor in X-Forwarded-For at all, so that header would otherwise record
# the tunnel itself and look perfectly plausible. If — and only if — Cloudflare
# is genuinely in front of you, let its header through again:
#
#   CF_CONNECTING_IP=$http_cf_connecting_ip
#
# That is safe there because Cloudflare sets the header itself, replacing
# anything the client sent. Anywhere else, leave it unset.

# ── Session length (optional) ──────────────────────────────────────────────
# How long a sign-in lasts, in days. Default 90 — long enough that people who
# train regularly never see a login screen, short enough that a stolen cookie
# doesn't stay good forever. Lower it for an instance on the open internet,
# raise it for a private one. Only affects new sign-ins; cookies already handed
# out keep the lifetime they were issued with. Users can end every session on
# every device themselves with "Sign out everywhere" in Settings.
#
#   SESSION_DAYS=90

# ── Fitting into an existing stack (optional) ──────────────────────────────
# The defaults assume openGym is on its own: an API service called `api` on
# port 3000, and nginx listening on 80 inside the web container. If you are
# merging this into a compose file that already has an `api`, or you front the
# web container with your own reverse proxy, move them here. The web image
# renders its nginx config at start-up, so these apply to a prebuilt image and
# need no rebuild. BACKEND and PORT together are what /api is proxied to, so
# they must name a service the web container can reach on your network:
#
#   NGINX_PORT=80
#   BACKEND=api
#   PORT=3000
#
# Serving openGym under a subpath (https://example.com/gym/)? If your reverse
# proxy strips the prefix before the container sees it, set nothing — the app
# asks its own address for the API. If it passes the prefix through, name it
# here without a trailing slash:
#
#   BASE_PATH=/gym

# ── Where the data lives (optional) ────────────────────────────────────────
# DATA_DIR is the one directory the API stores anything in: db.json (accounts,
# passkey credentials, push subscriptions, invites), state-<uid>.json per
# profile, `secret` (the key every session cookie is signed with), vapid.json,
# audit.log, uploads/ (the photos and videos of custom exercises), and the
# Coach's coach.json and coach/ when it is on. Back up that
# directory and you have backed up the instance; lose `secret` and everyone is
# signed out. Default /data.
#
# Under docker compose it is pinned to /data in docker-compose.yml and the host
# side of the volume is ./data — so to keep the data somewhere else, change the
# volume line rather than this variable, which the compose file overrides. The
# variable is what you set when the API runs outside that file: `node server.js`
# on a host, or a stack of your own.
#
# It has to be writable by the API: every save goes through it, and a read-only
# mount or a full disk is a write that cannot land.
#
#   DATA_DIR=/data

# ── Photos and videos of custom exercises (optional) ───────────────────────
# People can give an exercise they made a photo, a GIF or a short video. It is
# stored on this server under ./data/uploads/<profile>/ and only its owner can
# read it back. On by default with the limits below; every MB is 1024×1024
# bytes. Turn it off entirely (the app then offers a link field only):
#
#   MEDIA_UPLOADS=0
#
# Space per profile (0 = no cap), and per file. Photos are shrunk on the
# device before upload (1600 px), so 2 MB is plenty; videos are not shrunk.
#
#   MEDIA_QUOTA_MB=200
#   MEDIA_IMAGE_MAX_MB=2
#   MEDIA_GIF_MAX_MB=8
#   MEDIA_VIDEO_MAX_MB=40
#   MEDIA_VIDEO_MAX_SEC=60
#
# A file nobody's exercise uses any more is deleted after this many days (other
# devices may still show it until they sync):
#
#   MEDIA_GC_GRACE_DAYS=14
#
# Uploads per profile per hour, and the free disk space below which uploads
# are refused so a full disk cannot take the rest of the instance with it.
# On an instance with open signup, lower MEDIA_QUOTA_MB too: the worst case is
# the quota times the number of profiles.
#
#   MEDIA_UPLOADS_PER_HOUR=600
#   MEDIA_MIN_FREE_MB=512
#
# The web container's own cap on an upload. Keep it above MEDIA_VIDEO_MAX_MB,
# and give any reverse proxy in front the same room (docs/SELF_HOSTING.md):
#
#   MEDIA_UPLOAD_MAX=48m

# ── Notifications (optional) ───────────────────────────────────────────────
# Push works out of the box — nothing to set. VAPID keys are generated on first
# run and saved to ./data/vapid.json. Each user's browser reports its own
# timezone automatically, so the workout-day reminder fires at their local
# time regardless of where the server runs or where they're travelling.
#
# Push services want a contact address for whoever operates the server, in case
# they need to get in touch about your pushes. Defaults to your ORIGIN, which is
# fine; set a mailto: if you would rather they mailed you:
#
#   VAPID_SUBJECT=mailto:you@example.com

# ── AI Coach (optional, off by default) ────────────────────────────────────
# The Coach stays off until an admin turns it on in Settings → Admin and
# connects a provider. An instance that never does is byte-for-byte the same
# app it was before the feature existed.
#
# Anthropic, OpenAI, Gemini and any OpenAI-compatible endpoint (Ollama, LM
# Studio, vLLM, OpenRouter…) are driven over plain HTTPS with an API key and
# need nothing that is not already in the default image. Nothing to set here.
#
# API_TARGET only matters if you want the Claude Agent SDK or the Codex CLI
# running inside the container. `default` carries no AI runtime at all — no
# Agent SDK, no Codex, no bubblewrap. `coach` adds them (~300 MB):
#
#   API_TARGET=coach docker compose up -d --build api
#
# COACH_DISABLED is the kill switch that outranks the admin toggle. Set it when
# you want the Coach off for certain — after an incident, or on an instance
# where nobody should be able to turn it on:
#
#   COACH_DISABLED=1
#
# COACH_JOB_TIMEOUT_MS gives a job longer than the default five minutes. Only a
# local model on a CPU needs it — and normally only for the first request after
# the model server restarts (the api pre-warms the rules cache after that; a
# warm review on a 3B model takes one to a few minutes, depending on the CPU).
# A hosted API that needs
# more has a problem. Never goes below one minute.
#
#   COACH_JOB_TIMEOUT_MS=1500000
#
# Credentials never live here. They are encrypted into ./data/coach.json, one
# per provider, or for the Codex provider cached in ./coach-auth — a sibling of ./data, never inside it,
# so a live sign-in does not ride along in the documented backup archive.
# See docs/AI_COACH.md.
# ── Hevy map regeneration (developers only) ────────────────────────────────
# Not used by the running app. End users paste their own key in Settings →
# Import from Hevy. Set this only to regenerate frontend/src/lib/hevy-id-map.js:
#
#   HEVY_API_KEY=
#   node scripts/build-hevy-id-map.mjs