feat: standalone curl-pipe installer, no clone required

- install.sh works outside a checkout: installs into CONTAINR_DIR
  (default ./containr), downloads docker-compose.yml + .env.example from
  the repo, generates secrets, pulls published images
- CONTAINR_REF selects the git ref for downloads; CONTAINR_BUILD=1 or a
  failed pull fetches the source tarball and builds locally
- env-var overrides (HTTP_PORT/API_PORT/...) are persisted into .env;
  health-wait ports resolve env -> .env -> defaults
- drop fixed `name: containr` from root compose so installs in different
  directories get distinct project names
- README: curl one-liner is the primary install path

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

install.sh

@@ -1,20 +1,62 @@
 #!/usr/bin/env bash
-# Containr one-shot installer: creates .env with generated secrets, pulls the
-# published images (or builds from source), boots the stack, and waits for
-# the API to report healthy.
+# Containr installer. Works from a source checkout, or standalone:
+#   curl -fsSL https://raw.githubusercontent.com/Dvorinka/Containr/main/install.sh | bash
+#
+# Creates .env with generated secrets, pulls the published images (or builds
+# from source), boots the stack, and waits for the API to report healthy.
+#
+# Env overrides (all optional):
+#   CONTAINR_DIR      install dir when not run from a clone (default ./containr)
+#   CONTAINR_VERSION  image tag to pull (default latest, e.g. 0.1.1)
+#   CONTAINR_REF      git ref for downloaded files (default main)
+#   CONTAINR_BUILD=1  force building images from source
+#   HTTP_PORT API_PORT POSTGRES_PORT REDIS_PORT  host port remaps
 set -euo pipefail
 
-cd "$(dirname "$0")"
+cd "$(dirname "$0")" 2>/dev/null || true
 
 info() { printf '\033[1;34m==>\033[0m %s\n' "$*"; }
 err()  { printf '\033[1;31mError:\033[0m %s\n' "$*" >&2; }
 
+CONTAINR_REF="${CONTAINR_REF:-main}"
+RAW_BASE="https://raw.githubusercontent.com/Dvorinka/Containr/${CONTAINR_REF}"
+
 # Dependencies
 command -v docker >/dev/null 2>&1 || { err "docker not found. Install Docker: https://docs.docker.com/get-docker/"; exit 1; }
 docker compose version >/dev/null 2>&1 || { err "docker compose (v2) not found. Update Docker or install the compose plugin."; exit 1; }
 docker info >/dev/null 2>&1 || { err "docker daemon is not running or not reachable."; exit 1; }
 command -v openssl >/dev/null 2>&1 || { err "openssl not found (needed to generate secrets)."; exit 1; }
-command -v curl >/dev/null 2>&1 || { err "curl not found (needed for the health check)."; exit 1; }
+command -v curl >/dev/null 2>&1 || { err "curl not found (needed for downloads and the health check)."; exit 1; }
+
+# Install location: explicit CONTAINR_DIR wins; otherwise reuse the current
+# dir when it already looks like a checkout/install, else ./containr.
+if [[ -n "${CONTAINR_DIR:-}" ]]; then
+    mkdir -p "$CONTAINR_DIR"
+    cd "$CONTAINR_DIR"
+elif [[ ! -f docker-compose.yml || ! -f .env.example ]]; then
+    CONTAINR_DIR="./containr"
+    mkdir -p "$CONTAINR_DIR"
+    cd "$CONTAINR_DIR"
+fi
+
+# Fetch compose file and env template when running standalone. Existing
+# files are kept so re-runs stay idempotent.
+if [[ ! -f docker-compose.yml ]]; then
+    info "Downloading docker-compose.yml (${CONTAINR_REF})..."
+    curl -fsSL "$RAW_BASE/docker-compose.yml" -o docker-compose.yml
+fi
+if [[ ! -f .env.example ]]; then
+    info "Downloading .env.example (${CONTAINR_REF})..."
+    curl -fsSL "$RAW_BASE/.env.example" -o .env.example
+fi
+
+# Source tarball, only needed when building images locally.
+ensure_source() {
+    [[ -d app/backend ]] && return 0
+    command -v tar >/dev/null 2>&1 || { err "tar not found (needed to unpack the source)."; exit 1; }
+    info "Downloading source (${CONTAINR_REF})..."
+    curl -fsSL "https://codeload.github.com/Dvorinka/Containr/tar.gz/${CONTAINR_REF}" | tar xz --strip-components=1
+}
 
 # Env file
 if [[ -f .env ]]; then
@@ -38,22 +80,32 @@ else
     # POSTGRES_PASSWORD, DATABASE_URL and DB_PASSWORD stay in sync.
     sed -i.bak "s|your_secure_postgres_password|$PG_PASS|g" .env
     sed -i.bak "s|your_secure_redis_password|$REDIS_PASS|g" .env
+
+    # Persist any overrides passed via the environment.
+    for v in HTTP_PORT API_PORT POSTGRES_PORT REDIS_PORT CONTAINR_VERSION; do
+        [[ -n "${!v:-}" ]] && setvar "$v" "${!v}"
+    done
+
     rm -f .env.bak
     info ".env created with random secrets."
 fi
 
-# Ports (overridable via environment, matching docker-compose.yml vars)
+# Ports for the health wait: environment first, then .env, then defaults.
+HTTP_PORT="${HTTP_PORT:-$(grep -E '^HTTP_PORT=' .env | cut -d= -f2)}"
+API_PORT="${API_PORT:-$(grep -E '^API_PORT=' .env | cut -d= -f2)}"
 HTTP_PORT="${HTTP_PORT:-3000}"
 API_PORT="${API_PORT:-8082}"
 
-# Boot: pull published :latest images by default (CONTAINR_VERSION pins a
-# release). Build from source instead with CONTAINR_BUILD=1, or as fallback
-# when the registry is unreachable.
+# Boot: pull published images by default (CONTAINR_VERSION pins a release).
+# Build from source with CONTAINR_BUILD=1, or as fallback when the registry
+# is unreachable.
 if [[ "${CONTAINR_BUILD:-}" == "1" ]]; then
     info "CONTAINR_BUILD=1 - building images from source..."
+    ensure_source
     docker compose build
 elif ! docker compose pull; then
     info "Image pull failed - building from source instead..."
+    ensure_source
     docker compose build
 fi
 info "Starting the stack..."
@@ -79,4 +131,4 @@ info "Containr is running."
 echo "  UI:  http://localhost:${HTTP_PORT}"
 echo "  API: http://localhost:${API_PORT}"
 echo ""
-echo "Manage with: docker compose logs -f | docker compose down"
+echo "Manage with: (cd ${CONTAINR_DIR:-.} && docker compose logs -f | docker compose down)"