chore: Setup docker env for local builds using example file

Author: sparkison

.env.docker.example

@@ -0,0 +1,27 @@
+# Build
+LOCAL_BUILD=true
+IMAGE_TAG=local
+
+# Gluetun
+SERVER_COUNTRIES=
+VPN_SERVICE_PROVIDER=
+WIREGUARD_PRIVATE_KEY=
+WIREGUARD_ADDRESSES=
+SERVER_HOSTNAMES=
+
+# Config variables
+#FPMPORT=9900
+
+#REDIS_HOST=m3u-editor-redis
+#REDIS_SERVER_PORT=36790
+
+#M3U_PROXY_API_TOKEN=changeme
+#M3U_PROXY_HOST=127.0.0.1
+#M3U_PROXY_PORT=38085
+#M3U_PROXY_PUBLIC_URL=http://localhost:36400/m3u-proxy
+
+#PG_HOST=m3u-editor-postgres
+#PG_PORT=54320
+#PG_DATABASE=m3ue
+#PG_USER=m3ue
+#PG_PASSWORD=m3ue

rebuild.sh

@@ -6,6 +6,13 @@ ENV_FILE=".env.docker"
 FULL_COMPOSE="docker-compose.full.yml"
 VPN_COMPOSE="docker-compose.full-gluetun.yml"
 
+# Ensure .env.docker exists (copy from .env.example if missing)
+ENV_FILE=".env.docker"
+if [ ! -f "${ENV_FILE}" ]; then
+    echo "-- Missing environment file, creating now..."
+    cp "${ENV_FILE}.example" "${ENV_FILE}"
+fi
+
 print_menu() {
 	# print directly to the controlling terminal so the menu isn't captured
 	# by command substitution that collects the function's stdout