<%#
 Copyright 2013-2017 the original author or authors from the JHipster project.

 This file is part of the JHipster project, see https://jhipster.github.io/
 for more information.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-%>
package <%=packageName%>.config;

import com.couchbase.client.java.Cluster;
import com.couchbase.client.java.bucket.BucketType;
import com.couchbase.client.java.cluster.DefaultBucketSettings;
import com.couchbase.client.java.env.CouchbaseEnvironment;
import org.assertj.core.util.Lists;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.couchbase.config.AbstractCouchbaseConfiguration;
import org.springframework.data.couchbase.config.BeanNames;
import org.springframework.data.couchbase.config.CouchbaseConfigurer;
import org.testcontainers.couchbase.CouchbaseContainer;

import java.util.List;

@Configuration
public class DatabaseTestConfiguration extends AbstractCouchbaseConfiguration {

    private static String name;

    private static CouchbaseContainer couchbaseContainer;

    public DatabaseTestConfiguration(@Value("${spring.couchbase.bucket.name}") String name) {
        DatabaseTestConfiguration.name = name;
    }

    @Override
    @Bean(destroyMethod = "", name = BeanNames.COUCHBASE_ENV)
    public CouchbaseEnvironment couchbaseEnvironment() {
        return getCouchbaseContainer().getCouchbaseEnvironment();
    }

    @Override
    public Cluster couchbaseCluster() throws Exception {
        return getCouchbaseContainer().getCouchbaseCluster();
    }

    @Override
    protected List<String> getBootstrapHosts() {
        return Lists.newArrayList(getCouchbaseContainer().getContainerIpAddress());
    }

    @Override
    protected String getBucketName() {
        return name;
    }

    @Override
    protected String getBucketPassword() {
        return "";
    }

    @Override
    protected CouchbaseConfigurer couchbaseConfigurer() {
        return this;
    }

    private static CouchbaseContainer getCouchbaseContainer() {
        if (couchbaseContainer != null) {
            return couchbaseContainer;
        }
        couchbaseContainer = new CouchbaseContainer()
            .withNewBucket(DefaultBucketSettings.builder()
                .name(name)
                .type(BucketType.COUCHBASE)
                .quota(100)
                .build());
        couchbaseContainer.start();
        return couchbaseContainer;
    }
}

<%#
 Copyright 2013-2017 the original author or authors from the JHipster project.

 This file is part of the JHipster project, see https://jhipster.github.io/
 for more information.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-%>
package <%=packageName%>.config;

import com.couchbase.client.java.Cluster;
import com.couchbase.client.java.bucket.BucketType;
import com.couchbase.client.java.cluster.DefaultBucketSettings;
import com.couchbase.client.java.env.CouchbaseEnvironment;
import org.assertj.core.util.Lists;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.couchbase.config.AbstractCouchbaseConfiguration;
import org.springframework.data.couchbase.config.BeanNames;
import org.springframework.data.couchbase.config.CouchbaseConfigurer;
import org.testcontainers.couchbase.CouchbaseContainer;

import java.util.List;

@Configuration
public class DatabaseTestConfiguration extends AbstractCouchbaseConfiguration {

    private static String name;

    private static CouchbaseContainer couchbaseContainer;

    public DatabaseTestConfiguration(@Value("${spring.couchbase.bucket.name}") String name) {
        DatabaseTestConfiguration.name = name;
    }

    @Override
    @Bean(destroyMethod = "", name = BeanNames.COUCHBASE_ENV)
    public CouchbaseEnvironment couchbaseEnvironment() {
        return getCouchbaseContainer().getCouchbaseEnvironment();
    }

    @Override
    public Cluster couchbaseCluster() throws Exception {
        return getCouchbaseContainer().getCouchbaseCluster();
    }

    @Override
    protected List<String> getBootstrapHosts() {
        return Lists.newArrayList(getCouchbaseContainer().getContainerIpAddress());
    }

    @Override
    protected String getBucketName() {
        return name;
    }

    @Override
    protected String getBucketPassword() {
        return "";
    }

    @Override
    protected CouchbaseConfigurer couchbaseConfigurer() {
        return this;
    }

    private static CouchbaseContainer getCouchbaseContainer() {
        if (couchbaseContainer != null) {
            return couchbaseContainer;
        }
        couchbaseContainer = new CouchbaseContainer("<%= DOCKER_COUCHBASE %>")
            .withNewBucket(DefaultBucketSettings.builder()
                .name(name)
                .type(BucketType.COUCHBASE)
                .quota(100)
                .build());
        couchbaseContainer.start();
        return couchbaseContainer;
    }
}

Fix Couchbase container version as same as used in application