diff --git a/Dockerfile b/Dockerfile
index d0b376bd..28f23abc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -50,6 +50,9 @@ RUN if [ ! -f "monero-sys/monero/CMakeLists.txt" ]; then \
 
 WORKDIR /build/swap
 
+# Act as if we are in a GitHub Actions environment
+ENV DOCKER_BUILD=true
+
 RUN cargo build -vv --bin=asb
 
 FROM ubuntu:24.04
diff --git a/monero-sys/build.rs b/monero-sys/build.rs
index ffe607d9..10f697bf 100644
--- a/monero-sys/build.rs
+++ b/monero-sys/build.rs
@@ -2,6 +2,7 @@ use cmake::Config;
 
 fn main() {
     let is_github_actions: bool = std::env::var("GITHUB_ACTIONS").is_ok();
+    let is_docker_build: bool = std::env::var("DOCKER_BUILD").is_ok();
 
     // Only rerun this when the bridge.rs or static_bridge.h file changes.
     println!("cargo:rerun-if-changed=src/bridge.rs");
@@ -37,9 +38,10 @@ fn main() {
         .define("GTEST_HAS_ABSL", "OFF")
         // Use lightweight crypto library
         .define("MONERO_WALLET_CRYPTO_LIBRARY", "cn")
-        .build_arg(match is_github_actions {
-            true => "-j1",
-            false => "-j",
+        .build_arg(match (is_github_actions, is_docker_build) {
+            (true, _) => "-j1",
+            (_, true) => "-j1",
+            (_, _) => "-j",
         })
         .build();