add context path

src/main/java/gov/usgs/earthquake/nshmp/www/SwaggerController.java

@@ -23,7 +23,7 @@ import jakarta.inject.Inject;
     name = "Swagger",
     description = "Swagger OpenAPI YAML")
 @Hidden
-@Controller("/swagger")
+@Controller("${nshmp.context-path}/swagger")
 public class SwaggerController {
 
   @Inject

src/main/java/gov/usgs/earthquake/nshmp/www/gmm/GmmController.java

@@ -29,7 +29,7 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.inject.Inject;
 
 @Tag(name = "Ground Motion Models")
-@Controller("/gmm")
+@Controller("${nshmp.context-path}/gmm")
 class GmmController {
 
   private static final String JAVADOC_URL =

src/main/resources/application.yml

@@ -14,3 +14,6 @@ micronaut:
       access-logger:
         enabled: true
         logger-name: http
+
+nshmp:
+  context-path: ${CONTEXT_PATH:}