Docker 一直是创建和管理**容器镜像**和**容器**的主要工具之一。

还有一个公共 <a href="https://hub.docker.com/" class="external-link" target="_blank">Docker Hub</a> ，其中包含预制的 **官方容器镜像**, 适用于许多工具、环境、数据库和应用程序。

例如，有一个官方的 <a href="https://hub.docker.com/_/python" class="external-link" target="_blank">Python 镜像</a>。

还有许多其他镜像用于不同的需要（例如数据库），例如：


* <a href="https://hub.docker.com/_/postgres" class="external-link" target="_blank">PostgreSQL</a>

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertThrows;

@Deprecated
class MavenPropertiesLoaderTest {

    @Test
    void testIncludes() throws Exception {
        FileSystem fs = Jimfs.newFileSystem(Configuration.unix());

        Path mavenHome = fs.getPath("/maven");

 * 'rootObject.getChild().isName()' for boolean properties.
 *
 * @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public class ObjectBasedValueSource extends AbstractValueSource {

    private final Object root;

    /**
     * Construct a new value source, using the supplied object as the root from

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package gradlebuild.docs.dsl.source.model

import spock.lang.Specification

class MethodMetaDataTest extends Specification {
    final ClassMetaData owner = Mock()
    final MethodMetaData method = new MethodMetaData('method', owner)

    def formatsSignature() {

/**
 * Register a build service that monitors a list of tasks and reports CACHE_MISS if they're actually executed.
 */
if (buildCacheEnabled()) {
    registerBuildScanInfoCollectingService(CacheMissMonitorBuildService::class.java, ::isCacheMissMonitoredTask) { gradleRootProject, cacheMissInBuildLogic, cacheMissInMainBuild ->
        gradleRootProject.extensions.findByType<BuildScanConfiguration>()?.run {
            buildFinished {

import org.apache.maven.lifecycle.LifecycleExecutionException;

/**
 * Default mojo execution strategy. It just iterates over mojo executions and runs one by one
 */
@Named
@Singleton
public class DefaultMojosExecutionStrategy implements MojosExecutionStrategy {
    @Override
    public void execute(List<MojoExecution> mojos, MavenSession session, MojoExecutionRunner mojoRunner)
            throws LifecycleExecutionException {

 * under the License.
 */
package org.apache.maven.cli;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;

@Deprecated
class CLIReportingUtilsTest {

    @Test
    void testFormatDuration() {
        assertEquals("0.001 s", CLIReportingUtils.formatDuration(1));
        assertEquals("0.999 s", CLIReportingUtils.formatDuration(1000 - 1));

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.settings;

/**
 * If there was an error in the settings file.
 *
 */
public class SettingsConfigurationException extends Exception {
    private int lineNumber;

    private int columnNumber;

    public SettingsConfigurationException(String message) {
        super(message);
    }

 * and should only be used by a single thread.
 *
 * @see ThreadSafe
 * @since 4.0.0
 */
@Experimental
@Documented
@Retention(RetentionPolicy.CLASS)
@Target(ElementType.TYPE)

 * is thread safe.  {@link Immutable} objects are automatically thread safe.
 *
 * @see Immutable
 * @see NotThreadSafe
 * @since 4.0.0
 */
@Experimental
@Documented
@Retention(RetentionPolicy.CLASS)
@Target(ElementType.TYPE)