# How to modify endpoint hostname (Keycloak on docker)

**URL:** <https://forum.keycloak.org/t/how-to-modify-endpoint-hostname-keycloak-on-docker/8097>\
**Category:** Configuring the server\
**Tags:** oidc\
**Created:** [March 23, 2021, 11:42am UTC](https://forum.keycloak.org/t/how-to-modify-endpoint-hostname-keycloak-on-docker/8097 "2021-03-23T11:42:18Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![tokohito](https://avatars.discourse-cdn.com/v4/letter/t/7ab992/32.png) [@tokohito](https://forum.keycloak.org/u/tokohito)\
**Post date:** [March 23, 2021, 11:42am UTC](https://forum.keycloak.org/t/how-to-modify-endpoint-hostname-keycloak-on-docker/8097/1 "2021-03-23T11:42:18Z")

</div>

Hello

I’m testing Keycloak standalone mode using the official Docker image.  
I want to override the endpoint hostname in openid-configuration, but it’s not working so far.  
Please give me some advice on how to achieve my intended change.

```
$ sudo docker image inspect jboss/keycloak | grep VERSION
                "KEYCLOAK_VERSION=12.0.4",
                "JDBC_POSTGRES_VERSION=42.2.5",
                "JDBC_MYSQL_VERSION=8.0.22",
                "JDBC_MARIADB_VERSION=2.5.4",
                "JDBC_MSSQL_VERSION=8.2.2.jre11",
                "KEYCLOAK_VERSION=12.0.4",
                "JDBC_POSTGRES_VERSION=42.2.5",
                "JDBC_MYSQL_VERSION=8.0.22",
                "JDBC_MARIADB_VERSION=2.5.4",
                "JDBC_MSSQL_VERSION=8.2.2.jre11",

$ sudo docker run --name keycloak -d \
  -p 8081:8080 \
  -p 8444:8443 \
  -e KEYCLOAK_USER=admin \
  -e KEYCLOAK_PASSWORD=password \
  -e KEYCLOAK_IMPORT=/tmp/demo_realm.json \
  -v /home/username/keycloak/demo_realm.json:/tmp/demo_realm.json \
  -v /home/username/keycloak/standalone_mod.xml:/opt/jboss/keycloak/standalone/configuration/standalone.xml \
  jboss/keycloak

$ sudo docker exec keycloak cat /opt/jboss/keycloak/standalone/configuration/standalone.xml
            <spi name="hostname">
                <default-provider>${keycloak.hostname.provider:default}</default-provider>
                <provider name="default" enabled="true">
                    <properties>
                        <property name="frontendUrl" value="https://sso.example.com"/>
                        <property name="forceBackendUrlToFrontendUrl" value="true"/>
                    </properties>
                </provider>
                <provider name="fixed" enabled="true">
                    <properties>
                        <property name="hostname" value="${keycloak.hostname.fixed.hostname:localhost}"/>
                        <property name="httpPort" value="${keycloak.hostname.fixed.httpPort:-1}"/>
                        <property name="httpsPort" value="${keycloak.hostname.fixed.httpsPort:-1}"/>
                        <property name="alwaysHttps" value="${keycloak.hostname.fixed.alwaysHttps:false}"/>
                    </properties>
                </provider>
            </spi>

$ curl https://sso.example.com/auth/realms/demo/.well-known/openid-configuration | jq
{
  "issuer": "http://192.168.0.100:8081/auth/realms/home",
  "authorization_endpoint": "http://192.168.0.100:8081/auth/realms/demo/protocol/openid-connect/auth",
  "token_endpoint": "http://192.168.0.100:8081/auth/realms/demo/protocol/openid-connect/token",
  "introspection_endpoint": "http://192.168.0.100:8081/auth/realms/demo/protocol/openid-connect/token/introspect",
  "userinfo_endpoint": "http://192.168.0.100:8081/auth/realms/demo/protocol/openid-connect/userinfo",
  "end_session_endpoint": "http://192.168.0.100:8081/auth/realms/demo/protocol/openid-connect/logout",
  "jwks_uri": "http://192.168.0.100:8081/auth/realms/demo/protocol/openid-connect/certs",
  "check_session_iframe": "http://192.168.0.100:8081/auth/realms/demo/protocol/openid-connect/login-status-iframe.html",
  "grant_types_supported": [
    "authorization_code",
    "implicit",
    "refresh_token",
    "password",
    "client_credentials"
  ],

```

best regards.

---

<div class="post-metadata">

**Author:** ![l10178](https://yyz2.discourse-cdn.com/free1/user_avatar/forum.keycloak.org/l10178/32/2422_2.png) [@l10178](https://forum.keycloak.org/u/l10178)\
**Post date:** [March 24, 2021, 1:09pm UTC](https://forum.keycloak.org/t/how-to-modify-endpoint-hostname-keycloak-on-docker/8097/2 "2021-03-24T13:09:54Z")

</div>

```
 docker run --name keycloak -d \
  -p 443:8443 \
  -e KEYCLOAK_USER=admin \
  -e KEYCLOAK_PASSWORD=password \
 -e KEYCLOAK_FRONTEND_URL=https://auth.test \
  jboss/keycloak:12.0.3

```

curl [https://auth.test/auth/realms/master/.well-known/openid-configuration](https://auth.test/auth/realms/master/.well-known/openid-configuration) -k |jq

“issuer”: “[https://auth.test/realms/master](https://auth.test/realms/master)”,  
“authorization\_endpoint”: “[https://auth.test/realms/master/protocol/openid-connect/auth](https://auth.test/realms/master/protocol/openid-connect/auth)”,  
“token\_endpoint”: “[https://auth.test/realms/master/protocol/openid-connect/token](https://auth.test/realms/master/protocol/openid-connect/token)”,  
“introspection\_endpoint”: “[https://auth.test/realms/master/protocol/openid-connect/token/introspect](https://auth.test/realms/master/protocol/openid-connect/token/introspect)”,  
“userinfo\_endpoint”: “[https://auth.test/realms/master/protocol/openid-connect/userinfo](https://auth.test/realms/master/protocol/openid-connect/userinfo)”,  
“end\_session\_endpoint”: “[https://auth.test/realms/master/protocol/openid-connect/logout](https://auth.test/realms/master/protocol/openid-connect/logout)”,  
“jwks\_uri”: “[https://auth.test/realms/master/protocol/openid-connect/certs](https://auth.test/realms/master/protocol/openid-connect/certs)”,