[MM-56732] Update keycloak docker configs and add make command (#26313)

* updating keycloak image
---------
Co-authored-by: Mattermost Build <build@mattermost.com>
Co-authored-by: Ben Schumacher <ben.schumacher@mattermost.com>

server/Makefile

@@ -676,6 +676,21 @@ config-ldap: ## Configures LDAP.
 	@sed -i'' -e 's|"GroupDisplayNameAttribute": ".*"|"GroupDisplayNameAttribute": "cn"|g' ../config/config.json
 	@sed -i'' -e 's|"GroupIdAttribute": ".*"|"GroupIdAttribute": "entryUUID"|g' ../config/config.json
 
+config-saml: ## Configures SAML.
+	@echo Setting up configuration for local SAML with keycloak, please ensure your keycloak is running on http://localhost:8484
+
+	@cp build/docker/keycloak/keycloak.crt ../config/saml-idp.crt
+
+	@sed -i'' -e 's|"Verify": true|"Verify": false|g' ../config/config.json
+	@sed -i'' -e 's|"Encrypt": true|"Encrypt": false|g' ../config/config.json
+	@sed -i'' -e 's|"SignRequest": true|"SignRequest": false|g' ../config/config.json
+	@sed -i'' -e 's|"IdpURL": ".*"|"IdpURL": "http://localhost:8484/realms/mattermost/protocol/saml"|g' ../config/config.json
+	@sed -i'' -e 's|"IdpDescriptorURL": ".*"|"IdpDescriptorURL": "http://localhost:8484/realms/mattermost"|g' ../config/config.json
+	@sed -i'' -e 's|"IdpMetadataURL": ".*"|"IdpMetadataURL": "http://localhost:8484/realms/mattermost/protocol/saml/descriptor"|g' ../config/config.json
+	@sed -i'' -e 's|"ServiceProviderIdentifier": ".*"|"ServiceProviderIdentifier": "mattermost"|g' ../config/config.json
+	@sed -i'' -e 's|"AssertionConsumerServiceURL": ".*"|"AssertionConsumerServiceURL": "http://localhost:8065/login/sso/saml"|g' ../config/config.json
+	@sed -i'' -e 's|"IdpCertificateFile": ".*"|"IdpCertificateFile": "saml-idp.crt"|g' ../config/config.json
+
 config-reset: ## Resets the config/config.json file to the default production values.
 	@echo Resetting configuration to production default
 	rm -f config/config.json