diff --git a/docs/security-guide/cvm-boundaries.md b/docs/security-guide/cvm-boundaries.md
index 3eeb29ed..b15c844c 100644
--- a/docs/security-guide/cvm-boundaries.md
+++ b/docs/security-guide/cvm-boundaries.md
@@ -29,7 +29,7 @@ This is the main configuration file for the application in JSON format:
 | name | 0.3.1 | string | Name of the instance |
 | runner | 0.3.1 | string | Name of the runner (currently defaults to "docker-compose") |
 | docker_compose_file | 0.3.1 | string | YAML string representing docker-compose config |
-| docker_config | 0.3.1 | object | Additional docker settings (currently empty) |
+| docker_config | 0.3.1 | object | (Removed since 0.5.5) Additional docker settings (currently empty) |
 | kms_enabled | 0.3.1 | boolean | Enable/disable KMS |
 | gateway_enabled | 0.3.1 | boolean | Enable/disable gateway |
 | local_key_provider_enabled | 0.3.1 | boolean | Use a local key provider |
diff --git a/dstack-types/src/lib.rs b/dstack-types/src/lib.rs
index dd7ed1db..1188a1f0 100644
--- a/dstack-types/src/lib.rs
+++ b/dstack-types/src/lib.rs
@@ -17,8 +17,6 @@ pub struct AppCompose {
     #[serde(default)]
     pub docker_compose_file: Option<String>,
     #[serde(default)]
-    pub docker_config: DockerConfig,
-    #[serde(default)]
     pub public_logs: bool,
     #[serde(default)]
     pub public_sysinfo: bool,
diff --git a/dstack-util/src/system_setup.rs b/dstack-util/src/system_setup.rs
index d9207752..697f18b2 100644
--- a/dstack-util/src/system_setup.rs
+++ b/dstack-util/src/system_setup.rs
@@ -1137,7 +1137,6 @@ impl Stage1<'_> {
             .notify_q("boot.progress", "setting up docker")
             .await;
         self.setup_docker_registry()?;
-        self.setup_docker_account(&envs)?;
         Ok(())
     }
 
@@ -1172,20 +1171,10 @@ impl Stage1<'_> {
         info!("Setting up docker registry");
         let registry_url = self
             .shared
-            .app_compose
-            .docker_config
-            .registry
+            .sys_config
+            .docker_registry
             .as_deref()
             .unwrap_or_default();
-        let registry_url = if registry_url.is_empty() {
-            self.shared
-                .sys_config
-                .docker_registry
-                .as_deref()
-                .unwrap_or_default()
-        } else {
-            registry_url
-        };
         if registry_url.is_empty() {
             return Ok(());
         }
@@ -1205,38 +1194,6 @@ impl Stage1<'_> {
         fs::write(DAEMON_ENV_FILE, serde_json::to_string(&daemon_env)?)?;
         Ok(())
     }
-
-    fn setup_docker_account(&self, envs: &BTreeMap<String, String>) -> Result<()> {
-        info!("Setting up docker account");
-        let username = self
-            .shared
-            .app_compose
-            .docker_config
-            .username
-            .as_deref()
-            .unwrap_or_default();
-        if username.is_empty() {
-            return Ok(());
-        }
-        let token_key = self
-            .shared
-            .app_compose
-            .docker_config
-            .token_key
-            .as_deref()
-            .unwrap_or_default();
-        if token_key.is_empty() {
-            return Ok(());
-        }
-        let token = envs
-            .get(token_key)
-            .with_context(|| format!("Missing token for {username}"))?;
-        if token.is_empty() {
-            bail!("Missing token for {username}");
-        }
-        cmd!(docker login -u $username -p $token)?;
-        Ok(())
-    }
 }
 
 macro_rules! const_pad {