Update config to accept environment variable

src/main/java/io/stargate/sgv2/jsonapi/service/embedding/configuration/EmbeddingConfigSourceProvider.java

@@ -2,17 +2,36 @@
 
 import io.quarkus.runtime.annotations.StaticInitSafe;
 import io.smallrye.config.source.yaml.YamlConfigSource;
+import java.io.File;
 import java.io.IOException;
 import java.net.URL;
 import java.util.Collections;
 import org.eclipse.microprofile.config.spi.ConfigSource;
 import org.eclipse.microprofile.config.spi.ConfigSourceProvider;
 
+/**
+ * Loading the YAML configuration file from the resource folder or env variable and making the
+ * config available to the application.
+ */
 @StaticInitSafe
 public class EmbeddingConfigSourceProvider implements ConfigSourceProvider {
+  String configPath = System.getenv("EMBEDDING_CONFIG_PATH");
+
   @Override
   public Iterable<ConfigSource> getConfigSources(ClassLoader forClassLoader) {
     try {
+      // Load the YAML files from environment variable
+      if (configPath != null && !configPath.isEmpty()) {
+        File file = new File(configPath);
+        if (!file.exists()) {
+          throw new RuntimeException(
+              "Config file does not exist at the path: " + file.getCanonicalPath());
+        }
+        URL fileUrl = file.toURI().toURL();
+        YamlConfigSource configSource = new YamlConfigSource(fileUrl);
+        return Collections.singletonList(configSource);
+      }
+      // Load the YAML files from src/main/resources/
       URL resourceURL = forClassLoader.getResource("embedding-providers-config.yaml");
       YamlConfigSource configSource = new YamlConfigSource(resourceURL);
       return Collections.singletonList(configSource);