diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..5773cee
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,46 @@
+apply plugin: 'groovy'
+
+group = 'tech.avroid'
+version = '0.1.0'
+description = 'Jenkins Shared Library'
+
+repositories {
+    mavenCentral()
+    maven {
+        url "https://repo.jenkins-ci.org/releases/"
+    }
+    maven {
+        url "https://repo.jenkins-ci.org/public/"
+    }
+}
+
+dependencies {
+    implementation 'org.codehaus.groovy:groovy-all:3.0.2'
+    implementation 'com.cloudbees:groovy-cps:1.32'
+    implementation 'org.jenkins-ci.main:jenkins-core:2.164.1'
+}
+
+sourceSets {
+    main {
+        groovy {
+            srcDirs = ['src', 'vars']
+        }
+    }
+}
+
+groovydoc {
+    // Set document and window titles.
+    docTitle = "Avroid Shared library"
+    windowTitle = "Avroid Shared library"
+
+    header = '''\
+        <img src="http://www.mrhaki.com/images/haki-logo-black-64.png"/>
+        <h2>Sample project</h2>
+        '''.stripIndent()
+
+    // Set custom footer for generated documentation.
+    footer = """\
+        <div class="custom-footer">
+            Generated on: ${new Date().format('yyyy-MM-dd HH:mm:ss')}
+        </div>""".stripIndent()
+}
diff --git a/src/tech/avroid/scm/Git.groovy b/src/tech/avroid/scm/Git.groovy
new file mode 100644
index 0000000..abd6907
--- /dev/null
+++ b/src/tech/avroid/scm/Git.groovy
@@ -0,0 +1,57 @@
+package tech.avroid.scm
+
+/**
+ * Class for working with Git
+ */
+class Git implements Serializable {
+
+    private Script script
+
+    Git(Script script) {
+        this.script = script
+    }
+
+    /**
+     * Method to clone a Git repository
+     * @param args Map - Arguments for cloning
+     *   - urlRepo: String - HTTP URL of the repository
+     *   - branch: String - Branch name, default "main"
+     *   - path: String - Directory to clone into, default "./"
+     *   - disableSubmodules: Boolean - Disable submodules, default true
+     *   - recursiveSubmodules: Boolean - Get submodules recursively, default true
+     *   - parentCredentials: Boolean - Use parent repository credentials, default true
+     *   - trackingSubmodules: Boolean - Use last commit in .gitmodules, default false
+     *   - listFiles: Boolean - List cloned files, default false
+     */
+    public clone(Map args = [:]) {
+        Map defaultArgs = [
+            branch: 'main',
+            disableSubmodules: false,
+            recursiveSubmodules: true,
+            parentCredentials: true,
+            trackingSubmodules: false,
+            path: './',
+            listFiles: false
+        ]
+
+        defaultArgs.each { k, v ->
+            if (args[k] == null || args[k] == '' || args[k] == []) {
+                args[k] = v
+            }
+        }
+
+        script.checkout([$class: 'GitSCM',
+          branches: [[name: "${args.branch}"]],
+          extensions: [[$class: 'RelativeTargetDirectory', relativeTargetDir: "${args.path}"],
+                       [$class: 'SubmoduleOption', disableSubmodules: args.disableSubmodules,
+                         recursiveSubmodules: args.recursiveSubmodules,
+						 parentCredentials: args.parentCredentials,
+						 trackingSubmodules: args.trackingSubmodules]],
+                         userRemoteConfigs: [[url: "${args.urlRepo}"]]
+        ])
+
+        if (args.listFiles) {
+            this.script.sh "ls -la ${args.path}"
+        }
+    }
+}
diff --git a/src/tech/avroid/ssh/Ssh.groovy b/src/tech/avroid/ssh/Ssh.groovy
new file mode 100644
index 0000000..e3c7ed2
--- /dev/null
+++ b/src/tech/avroid/ssh/Ssh.groovy
@@ -0,0 +1,46 @@
+package tech.avroid.ssh
+
+/**
+ * Class for work with SSH client
+ */
+class Ssh implements Serializable {
+
+    private Script script
+	private String sshKey
+	private String fileSshKey
+
+    Ssh(Script script, String sshKey, String fileSshKey) {
+        this.script = script
+		this.fileSshKey = fileSshKey
+		this.sshKey = sshKey
+    }
+
+    /**
+     * Add file with private Ssh key and create ssh config with disable "StrictHostKeyChecking" for all hosts
+     * @param sshKey          String  - Variable with private SSH key 
+     * @param fileSshKey      String  - name of file private SSH key's in catalog ~/.ssh
+     */
+    public void configureSshClient() {
+        script.println 'Configure SSH-client with private key for current user'
+        script.sh """
+            [ -d ~/.ssh ] || mkdir ~/.ssh && chmod 0700 ~/.ssh
+            cat $sshKey > ~/.ssh/$fileSshKey
+            chmod 600 ~/.ssh/$fileSshKey
+            echo 'Host *' > ~/.ssh/config
+            echo '    StrictHostKeyChecking no' >>  ~/.ssh/config
+            echo '    UserKnownHostsFile=/dev/null' >>  ~/.ssh/config
+        """
+    }
+
+    /**
+     * Remove file with private Ssh Key and ssh config
+     * @param fileSshKey      String  - name of file private SSH key's in catalog ~/.ssh
+     */
+    public void cleanupSshConfiguration() {
+        script.println 'Unconfigure SSH-client with private key for current user'
+        script.sh """
+            rm -f ~/.ssh/$fileSshKey
+            rm -f ~/.ssh/config
+        """
+    }
+}