Stop talking to docker in tests that don't need docker

`just test` doesn't use docker, but the cleanup was still pruning containers over and over. This switches to only cleaning up containers created by the tests.

Cargo.lock

@@ -1646,6 +1646,21 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "conquer-once"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d008a441c0f269f36ca13712528069a86a3e60dffee1d98b976eb3b0b2160b4"
+dependencies = [
+ "conquer-util",
+]
+
+[[package]]
+name = "conquer-util"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e763eef8846b13b380f37dfecda401770b0ca4e56e95170237bd7c25c7db3582"
+
 [[package]]
 name = "const-oid"
 version = "0.9.6"
@@ -6560,6 +6575,16 @@ dependencies = [
  "thiserror 2.0.18",
 ]
 
+[[package]]
+name = "signal-hook"
+version = "0.3.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d881a16cf4426aa584979d30bd82cb33429027e42122b169753d6ef1085ed6e2"
+dependencies = [
+ "libc",
+ "signal-hook-registry",
+]
+
 [[package]]
 name = "signal-hook-registry"
 version = "1.4.8"
@@ -7120,6 +7145,7 @@ dependencies = [
  "async-trait",
  "bollard",
  "bytes",
+ "conquer-once",
  "docker_credential",
  "either",
  "etcetera 0.11.0",
@@ -7133,6 +7159,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_with",
+ "signal-hook",
  "thiserror 2.0.18",
  "tokio",
  "tokio-stream",

crates/tranquil-pds/Cargo.toml

@@ -90,7 +90,7 @@ tranquil-infra = { workspace = true, features = ["testing"] }
 tempfile = "3"
 ciborium = { workspace = true }
 ctor = { workspace = true }
-testcontainers = { workspace = true }
+testcontainers = { workspace = true, features = ["watchdog"] }
 testcontainers-modules = { workspace = true }
 tranquil-ripple = { workspace = true }
 tranquil-sync = { workspace = true }

crates/tranquil-pds/tests/common/mod.rs

@@ -83,28 +83,41 @@ fn has_external_infra() -> bool {
         || (std::env::var("DATABASE_URL").is_ok()
             && (std::env::var("S3_ENDPOINT").is_ok() || std::env::var("BLOB_STORAGE_PATH").is_ok()))
 }
+
+#[cfg(not(feature = "external-infra"))]
+fn started_container_ids() -> Vec<String> {
+    let db = DB_CONTAINER.get().map(|c| c.id().to_string());
+    #[cfg(feature = "s3")]
+    let s3 = S3_CONTAINER.get().map(|c| c.id().to_string());
+    #[cfg(not(feature = "s3"))]
+    let s3: Option<String> = None;
+    db.into_iter().chain(s3).collect()
+}
+
+#[cfg(feature = "external-infra")]
+fn started_container_ids() -> Vec<String> {
+    Vec::new()
+}
+
 #[cfg(test)]
 #[ctor::dtor]
 fn cleanup() {
     if let Some(temp_dir) = TEST_TEMP_DIR.get() {
         let _ = std::fs::remove_dir_all(temp_dir);
     }
-    if has_external_infra() {
+    let ids = started_container_ids();
+    if ids.is_empty() {
         return;
     }
     if std::env::var("XDG_RUNTIME_DIR").is_ok() {
         let _ = std::process::Command::new("podman")
-            .args(["rm", "-f", "--filter", "label=tranquil_pds_test=true"])
+            .args(["rm", "-f"])
+            .args(&ids)
             .output();
     }
     let _ = std::process::Command::new("docker")
-        .args([
-            "container",
-            "prune",
-            "-f",
-            "--filter",
-            "label=tranquil_pds_test=true",
-        ])
+        .args(["rm", "-f"])
+        .args(&ids)
         .output();
 }