Add GEMINI_MODEL_NAME environment variable and update related scripts

- Introduced GEMINI_MODEL_NAME to .env.example and src/env.d.ts for customizable model selection.
- Updated docker-env-replace.sh to utilize the new GEMINI_MODEL_NAME variable in the environment setup.

Author: babaohuang

.env.example

@@ -8,5 +8,7 @@ HEAD_SCRIPTS=
 PUBLIC_SECRET_KEY=
 # Set password for site, support multiple password separated by comma. If not set, site will be public
 SITE_PASSWORD=
+# Customize the Gemini model to use. Defaults to gemini-2.5-flash if not set
+GEMINI_MODEL_NAME=
 # Set the maximum number of historical messages used for contextual contact
 PUBLIC_MAX_HISTORY_MESSAGES=

docker-compose.yml

@@ -15,4 +15,5 @@ services:
       # - PUBLIC_SECRET_KEY=YOUR_SECRET_KEY
       # - SITE_PASSWORD=YOUR_SITE_PASSWORD
       # - OPENAI_API_MODEL=YOUR_OPENAI_API_MODEL
+      # - GEMINI_MODEL_NAME=gemini-2.5-flash
 

hack/docker-env-replace.sh

@@ -14,6 +14,8 @@ public_secret_key=$PUBLIC_SECRET_KEY
 site_password=$SITE_PASSWORD
 # ID of the model to use. https://platform.openai.com/docs/api-reference/models/list
 openai_api_model=$OPENAI_API_MODEL
+# Customize the Gemini model to use
+gemini_model_name=$GEMINI_MODEL_NAME
 
 for file in $(find ./dist -type f -name "*.mjs"); do
   sed "s|({}).GEMINI_API_KEY|\"$gemini_api_key\"|g;
@@ -22,6 +24,7 @@ for file in $(find ./dist -type f -name "*.mjs"); do
   s|({}).HEAD_SCRIPTS|\"$head_scripts\"|g;
   s|({}).PUBLIC_SECRET_KEY|\"$public_secret_key\"|g;
   s|({}).OPENAI_API_MODEL|\"$openai_api_model\"|g;
+  s|({}).GEMINI_MODEL_NAME|\"$gemini_model_name\"|g;
   s|({}).SITE_PASSWORD|\"$site_password\"|g" $file > tmp
   mv tmp $file
 done

src/env.d.ts

@@ -8,6 +8,7 @@ interface ImportMetaEnv {
   readonly PUBLIC_SECRET_KEY: string
   readonly SITE_PASSWORD: string
   readonly OPENAI_API_MODEL: string
+  readonly GEMINI_MODEL_NAME: string
   readonly PUBLIC_MAX_HISTORY_MESSAGES: string
 }