- Docker 18.03 or above, refer here for [installation](https://docs.docker.com/install/).

### 2. Start etcd

etcd uses [gcr.io/etcd-development/etcd](https://console.cloud.google.com/gcr/images/etcd-development/GLOBAL/etcd) as a primary container registry.

```
rm -rf /tmp/etcd-data.tmp && mkdir -p /tmp/etcd-data.tmp && \
  podman rmi gcr.io/etcd-development/etcd:v3.3.9 || true && \
  podman run \
  -p 2379:2379 \
  -p 2380:2380 \

- **Automatic Detection**: Encryption automatically enabled when servers require it
- **Secure Key Management**: Proper key derivation and nonce generation

### Core Features
- **Per-context configuration**: No global state, each context encapsulates configuration
- **Authentication**: NTLM, Kerberos, SPNEGO unified subsystem
- **SLF4J Logging**: Comprehensive logging throughout the codebase

import javax.annotation.Nullable;
import java.util.Iterator;

/**
 * A parent class for transformations that are backed by a feature. This will inject the necessary "feature" into the
 * global setup and teardown section. See also org.elasticsearch.test.rest.yaml.Features for a list of possible features.
 */
public abstract class FeatureInjector implements RestTestTransformGlobalSetup, RestTestTransformGlobalTeardown {

  build_tree --> build2
  
  project3["root project"]
  build2 --> project3
  
  project4["project"]
  build2 --> project4

```

### Build process state

The "build process state" holds the global state of the build process and manages all the other state.

The build process state also includes state that is tied to a particular Gradle user home directory.

        // Alright, here's the justification for all the regexp wizardry below...
        //
        // Continuum and other server-like apps may need to locate the user-level and
        // global-level settings somewhere other than ${user.home} and ${maven.home},
        // respectively. Using a simple replacement of these patterns will allow them

            System.exit(2);
        }

        String targetRef = "refs/remotes/origin/" + targetBranch;

        if (!refExists(targetRef)) {
            System.err.println("Target ref " + targetRef + " not present locally; fetching origin/" + targetBranch + "...");
            run("git", "fetch", "origin", targetBranch);
        }

        String targetSha = stdout("git", "rev-parse", targetRef).trim();

          <description>
            The frequency for downloading updates - can be "always",
            "daily" (default), "interval:XXX" (in minutes) or "never"
            (only if it doesn't exist locally).
          </description>
          <type>String</type>
        </field>
        <field>
          <name>checksumPolicy</name>
          <version>1.0.0+</version>
          <description>

後で、より大きなアプリケーションを（おそらく複数ファイルで）構造化する方法（[Bigger Applications - Multiple Files](../../tutorial/bigger-applications.md)）について読むときに、*path operation*のグループに対して単一の`dependencies`パラメータを宣言する方法を学びます。

## グローバル依存関係 { #global-dependencies }

        }
        execute(spec -> {
            spec.setCommand("box");
            spec.setSubcommand("update");
        });

        // Destroying before every execution can be annoying while iterating on tests locally. Therefore, we provide a flag that defaults
        // to true that can be used to control whether or not to destroy any test boxes before test execution.
        boolean destroyVM = Util.getBooleanProperty("vagrant.destroy", true);

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package color

import (
	"fmt"

	"github.com/fatih/color"
)

// global colors.
var (
	// Check if we stderr, stdout are dumb terminals, we do not apply
	// ansi coloring on dumb terminals.
	IsTerminal = func() bool {
		return !color.NoColor
	}