Update installation.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Jan Tomášek committed Dec 10, 2025 at 10:31 UTC df2513393393500b2456e827985316ea0600609e
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docs/installation.md
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@@ -138,7 +138,7 @@ docker run -p 50080:80 \
138 - Dictionaries must be valid JSON (e.g., `{"temperature": "0"}`)
139
140 **Notes:**
141 -- These override default values in settings.json
141 +- These provide initial default values when settings.json doesn't exist or when new settings are added to the application. Once a value is saved in settings.json, it takes precedence over these environment variables.
142 - Sensitive settings (API keys, passwords) use their existing environment variables
143 - Container/process restart required for changes to take effect
144