feat(zkstack): Run containers with either chain or ecosystem (#3345)

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## Why ❔

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## Checklist

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- [ ] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [ ] Tests for the changes have been added / updated.
- [ ] Documentation comments have been added / updated.
- [ ] Code has been formatted via `zkstack dev fmt` and `zkstack dev
lint`.

zkstack_cli/crates/config/src/zkstack_config.rs

@@ -1,3 +1,5 @@
+use std::path::PathBuf;
+
 use anyhow::bail;
 use xshell::Shell;
 
@@ -9,14 +11,18 @@ pub enum ZkStackConfig {
 }
 
 impl ZkStackConfig {
-    fn from_file(shell: &Shell) -> anyhow::Result<ZkStackConfig> {
+    pub fn from_file(shell: &Shell) -> anyhow::Result<ZkStackConfig> {
         if let Ok(ecosystem) = EcosystemConfig::from_file(shell) {
-            Ok(ZkStackConfig::EcosystemConfig(ecosystem))
-        } else {
-            let chain_internal = ChainConfigInternal::from_file(shell)?;
-            let chain = ChainConfig::from_internal(chain_internal, shell.clone())?;
-            Ok(ZkStackConfig::ChainConfig(chain))
+            return Ok(ZkStackConfig::EcosystemConfig(ecosystem));
+        }
+
+        if let Ok(chain_internal) = ChainConfigInternal::from_file(shell) {
+            if let Ok(chain) = ChainConfig::from_internal(chain_internal, shell.clone()) {
+                return Ok(ZkStackConfig::ChainConfig(chain));
+            }
         }
+
+        bail!("Missing ZkStackConfig. Failed to find ecosystem or chain");
     }
 
     pub fn current_chain(shell: &Shell) -> anyhow::Result<ChainConfig> {
@@ -32,4 +38,11 @@ impl ZkStackConfig {
             Err(e) => bail!(e),
         }
     }
+
+    pub fn link_to_code(&self) -> PathBuf {
+        match self {
+            ZkStackConfig::EcosystemConfig(ecosystem) => ecosystem.link_to_code.clone(),
+            ZkStackConfig::ChainConfig(chain) => chain.link_to_code.clone(),
+        }
+    }
 }

zkstack_cli/crates/zkstack/src/commands/containers.rs

@@ -1,28 +1,24 @@
 use std::path::PathBuf;
 
-use anyhow::{anyhow, Context};
+use anyhow::anyhow;
 use common::{docker, logger, spinner::Spinner};
-use config::{
-    zkstack_config::ZkStackConfig, EcosystemConfig, DOCKER_COMPOSE_FILE,
-    ERA_OBSERVABILITY_COMPOSE_FILE,
-};
+use config::{zkstack_config::ZkStackConfig, DOCKER_COMPOSE_FILE, ERA_OBSERVABILITY_COMPOSE_FILE};
 use xshell::Shell;
 
 use super::args::ContainersArgs;
 use crate::{
     commands::ecosystem::setup_observability,
     messages::{
-        MSG_CONTAINERS_STARTED, MSG_FAILED_TO_FIND_ECOSYSTEM_ERR,
-        MSG_RETRY_START_CONTAINERS_PROMPT, MSG_STARTING_CONTAINERS,
+        MSG_CONTAINERS_STARTED, MSG_RETRY_START_CONTAINERS_PROMPT, MSG_STARTING_CONTAINERS,
         MSG_STARTING_DOCKER_CONTAINERS_SPINNER,
     },
 };
 
 pub fn run(shell: &Shell, args: ContainersArgs) -> anyhow::Result<()> {
     let args = args.fill_values_with_prompt();
-    let ecosystem = ZkStackConfig::ecosystem(shell).context(MSG_FAILED_TO_FIND_ECOSYSTEM_ERR)?;
+    let link_to_code = ZkStackConfig::from_file(shell)?.link_to_code();
 
-    initialize_docker(shell, &ecosystem)?;
+    initialize_docker(shell, link_to_code)?;
 
     logger::info(MSG_STARTING_CONTAINERS);
 
@@ -38,9 +34,9 @@ pub fn run(shell: &Shell, args: ContainersArgs) -> anyhow::Result<()> {
     Ok(())
 }
 
-pub fn initialize_docker(shell: &Shell, ecosystem: &EcosystemConfig) -> anyhow::Result<()> {
+pub fn initialize_docker(shell: &Shell, link_to_code: PathBuf) -> anyhow::Result<()> {
     if !shell.path_exists(DOCKER_COMPOSE_FILE) {
-        copy_dockerfile(shell, ecosystem.link_to_code.clone())?;
+        copy_dockerfile(shell, link_to_code)?;
     };
 
     Ok(())

zkstack_cli/crates/zkstack/src/commands/ecosystem/create.rs

@@ -103,7 +103,7 @@ fn create(args: EcosystemCreateArgs, shell: &Shell) -> anyhow::Result<()> {
 
     if args.start_containers {
         let spinner = Spinner::new(MSG_STARTING_CONTAINERS_SPINNER);
-        initialize_docker(shell, &ecosystem_config)?;
+        initialize_docker(shell, ecosystem_config.link_to_code)?;
         start_containers(shell, false)?;
         spinner.finish();
     }

zkstack_cli/crates/zkstack/src/messages.rs

@@ -283,7 +283,6 @@ pub(super) const MSG_STARTING_DOCKER_CONTAINERS_SPINNER: &str =
 pub(super) const MSG_CONTAINERS_STARTED: &str = "Containers started successfully";
 pub(super) const MSG_RETRY_START_CONTAINERS_PROMPT: &str =
     "Failed to start containers. Make sure there is nothing running on default ports for Ethereum node l1 and postgres. Want to try again?";
-pub(super) const MSG_FAILED_TO_FIND_ECOSYSTEM_ERR: &str = "Failed to find ecosystem folder.";
 pub(super) const MSG_OBSERVABILITY_RUN_PROMPT: &str = "Do you want to run observability?";
 
 /// Server related messages