diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8f840c2f..1386b69b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -26,11 +26,11 @@ jobs:
       run: cargo fmt --check
     - name: Clippy
       run: cargo clippy -- -D warnings
-  test:
+  build:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3
@@ -42,11 +42,13 @@ jobs:
           ~/.cargo/git
           target
         key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+    - name: Install Wasm32-wasi target
+      run: rustup target add wasm32-wasi
+    - name: Build Rust examples
+      working-directory: ./examples
+      run: make all
+    - name: Build wws on release mode
+      if: steps.check_file_release.outputs.files_exists != 'true'
+      run: cargo build --verbose --release
     - name: Test
-      run: cargo test --workspace --exclude wasm-workers-quick-js-engine
-  build:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v3
-    - name: Build
-      run: cargo build --verbose
\ No newline at end of file
+      run: cargo test --workspace --exclude wasm-workers-quick-js-engine -- --show-output
diff --git a/Cargo.lock b/Cargo.lock
index cf198478..4ded4779 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1139,6 +1139,12 @@ version = "0.3.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ec90ff4d0fe1f57d600049061dc6bb68ed03c7d2fbd697274c41805dcb3f8608"
 
+[[package]]
+name = "futures-io"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fff74096e71ed47f8e023204cfd0aa1289cd54ae5430a9523be060cdb849964"
+
 [[package]]
 name = "futures-sink"
 version = "0.3.26"
@@ -1158,9 +1164,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c1d6de3acfef38d2be4b1f543f553131788603495be83da675e180c8d6b7bd1"
 dependencies = [
  "futures-core",
+ "futures-io",
  "futures-task",
+ "memchr",
  "pin-project-lite",
  "pin-utils",
+ "slab",
 ]
 
 [[package]]
@@ -2585,6 +2594,7 @@ dependencies = [
  "libc",
  "memchr",
  "mio",
+ "num_cpus",
  "parking_lot",
  "pin-project-lite",
  "signal-hook-registry",
@@ -2956,6 +2966,7 @@ dependencies = [
  "env_logger 0.9.3",
  "openssl",
  "prettytable-rs",
+ "reqwest",
  "wws-config",
  "wws-router",
  "wws-runtimes-manager",
diff --git a/Cargo.toml b/Cargo.toml
index a2d0c13a..3418510f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,6 +33,9 @@ wws-router = { workspace = true }
 wws-server = { workspace = true }
 wws-runtimes-manager = { workspace = true }
 
+[dev-dependencies]
+reqwest = { version = "0.11", features = ["blocking"] }
+
 [target.x86_64-unknown-linux-musl.dependencies]
 openssl = { version = "=0.10.48", features = ["vendored"] }
 
diff --git a/examples/Makefile b/examples/Makefile
index 9d239cda..6ae334d2 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -20,4 +20,4 @@ pdf-create:
 	cargo build --target wasm32-wasi --release && \
 	mv target/wasm32-wasi/release/pdf-create.wasm ./index.wasm
 
-all: rust-basic rust-kv rust-params pdf-create
+all: rust-basic rust-kv rust-params
diff --git a/examples/ruby-basic/.wws.toml b/examples/ruby-basic/.wws.toml
new file mode 100644
index 00000000..773b70a6
--- /dev/null
+++ b/examples/ruby-basic/.wws.toml
@@ -0,0 +1,44 @@
+version = 1
+
+[[repositories]]
+name = "wasmlabs"
+url = "https://workers.wasmlabs.dev/repository/v1/index.toml"
+
+[[repositories.runtimes]]
+name = "ruby"
+version = "3.2.0+20230215-1"
+tags = [
+    "latest",
+    "3.2",
+    "3.2.0",
+]
+status = "active"
+extensions = ["rb"]
+args = [
+    "--",
+    "/src/index.rb",
+]
+
+[repositories.runtimes.binary]
+url = "https://github.com/vmware-labs/webassembly-language-runtimes/releases/download/ruby%2F3.2.0%2B20230215-1349da9/ruby-3.2.0.wasm"
+filename = "ruby.wasm"
+
+[repositories.runtimes.binary.checksum]
+type = "sha256"
+value = "abe348fba157a756f86194be445c77c99e8ed64ca76495ea07ed984f09eb66ae"
+
+[repositories.runtimes.polyfill]
+url = "https://workers.wasmlabs.dev/repository/v1/files/ruby/3-1/poly.rb"
+filename = "poly.rb"
+
+[repositories.runtimes.polyfill.checksum]
+type = "sha256"
+value = "449855a5d315879ab0ad830aa6a3f689e68fed4490617ea03efc77c9da64f630"
+
+[repositories.runtimes.wrapper]
+url = "https://workers.wasmlabs.dev/repository/v1/files/ruby/3-1/wrapper.txt"
+filename = "wrapper.txt"
+
+[repositories.runtimes.wrapper.checksum]
+type = "sha256"
+value = "6d808b4747cf30f82665a38a47e1176513bbdd6ad558c09db03d719e33ad2da0"
diff --git a/tests/e2e.rs b/tests/e2e.rs
new file mode 100644
index 00000000..51b2d890
--- /dev/null
+++ b/tests/e2e.rs
@@ -0,0 +1,163 @@
+#[cfg(test)]
+mod test {
+    use std::path::PathBuf;
+    use std::process::{Child, Command, Stdio};
+    use std::{env, io, thread, time};
+
+    #[cfg(not(target_os = "windows"))]
+    fn get_wws_path() -> PathBuf {
+        let path = PathBuf::from(std::env::var("CARGO_MANIFEST_DIR").unwrap());
+
+        // Use release when it's available
+        let wws_path = if path.join("target/release/wws").exists() {
+            path.join("target/release/wws")
+        } else {
+            path.join("target/debug/wws")
+        };
+
+        println!("[E2E] Running wws from {}", wws_path.display());
+
+        wws_path
+    }
+
+    #[cfg(target_os = "windows")]
+    fn get_wws_path() -> PathBuf {
+        let path = PathBuf::from(std::env::var("CARGO_MANIFEST_DIR").unwrap());
+
+        // Use release when it's available
+        let wws_path = if path.join("target/release/wws.exe").exists() {
+            path.join("target/release/wws.exe")
+        } else {
+            path.join("target/debug/wws.exe")
+        };
+
+        println!("[E2E] Running wws from {}", wws_path.display());
+
+        wws_path
+    }
+
+    fn run(example_path: &str) -> io::Result<Child> {
+        let path = PathBuf::from(std::env::var("CARGO_MANIFEST_DIR").unwrap());
+        let example_path = path.join("examples").join(example_path);
+        let wws_path = get_wws_path();
+
+        // Install missing runtimes
+        println!("[E2E] Installing missing runtimes");
+        Command::new(&wws_path)
+            .current_dir(&example_path)
+            .args(["runtimes", "install"])
+            .stdout(Stdio::inherit())
+            .stderr(Stdio::inherit())
+            .status()?;
+
+        // Run the example
+        println!("[E2E] Running the service");
+        Command::new(&wws_path).arg(&example_path).spawn()
+    }
+
+    fn sleep_for(seconds: u64) {
+        thread::sleep(time::Duration::from_secs(seconds));
+    }
+
+    fn request_body(url: &str) -> Result<String, reqwest::Error> {
+        reqwest::blocking::get(url)?.text()
+    }
+
+    // Check the examples/js-json works
+    fn run_end_to_end_test(example: &str, waiting_seconds: u64, url: &str, expected_text: &str) {
+        println!("[E2E] Running example: {example}");
+
+        let mut child = run(example).expect("Failed to execute command");
+
+        sleep_for(waiting_seconds);
+
+        let body = match request_body(url) {
+            Ok(body) => body,
+            Err(err) => {
+                eprintln!("[E2E] Error getting the body from the request to {url}");
+                eprintln!("[E2E] Error: {}", err);
+                String::new()
+            }
+        };
+
+        println!("[E2E] Body content: {body}");
+
+        println!("[E2E] Stopping wws process [{}]", &child.id());
+        child.kill().expect("Error stopping wws");
+
+        // Test
+        assert!(body.contains(expected_text));
+    }
+
+    #[test]
+    // Use this approach to run tests sequentially
+    fn test_end_to_end() {
+        // Allow configuring waiting times. It avoids having long waiting times
+        // in development, while making it configurable in the CI
+        let global_timeout =
+            env::var("E2E_WAITING_TIME").map_or(None, |str| str.parse::<u64>().ok());
+
+        // env (Result(String)) -> map ()
+
+        let tests = [
+            (
+                "rust-basic",
+                global_timeout.unwrap_or(5),
+                "http://localhost:8080/basic",
+                "This page was generated by a Wasm module built from Rust",
+            ),
+            (
+                "rust-kv",
+                global_timeout.unwrap_or(5),
+                "http://localhost:8080/kv",
+                "Counter: 0",
+            ),
+            (
+                "rust-params",
+                global_timeout.unwrap_or(5),
+                "http://localhost:8080/thisisatest",
+                "thisisatest",
+            ),
+            (
+                "js-basic",
+                global_timeout.unwrap_or(5),
+                "http://localhost:8080",
+                "This page was generated by a JavaScript file",
+            ),
+            (
+                "js-json",
+                global_timeout.unwrap_or(5),
+                "http://localhost:8080/handler",
+                "This message comes from an environment variable",
+            ),
+            (
+                "js-params",
+                global_timeout.unwrap_or(10),
+                "http://localhost:8080/thisisatest",
+                "thisisatest",
+            ),
+            (
+                "python-basic",
+                global_timeout.unwrap_or(20),
+                "http://localhost:8080/",
+                "This page was generated by a Python script",
+            ),
+            (
+                "python-mount",
+                global_timeout.unwrap_or(20),
+                "http://localhost:8080/",
+                "This page was loaded from a mounted file",
+            ),
+            (
+                "ruby-basic",
+                global_timeout.unwrap_or(20),
+                "http://localhost:8080/",
+                "This page was generated by a Ruby script",
+            ),
+        ];
+
+        for (example, waiting_seconds, url, expected_text) in tests {
+            run_end_to_end_test(example, waiting_seconds, url, expected_text);
+        }
+    }
+}