diff --git a/Containerfile b/Containerfile
index a95d31c..e7c3b28 100644
--- a/Containerfile
+++ b/Containerfile
@@ -12,6 +12,5 @@ COPY --from=caddy-builder /usr/bin/caddy /caddy
 
 VOLUME "/config.toml"
 VOLUME "/sites"
-EXPOSE 80
 
 CMD ["./sscdc"]
\ No newline at end of file
diff --git a/src/caddy.rs b/src/caddy.rs
index 916d30f..0382abf 100644
--- a/src/caddy.rs
+++ b/src/caddy.rs
@@ -97,7 +97,7 @@ impl CaddyController {
     }
 }
 
-fn get_initial_caddy_configuration_object(admin_api_socket_path: &Utf8Path, api_socket_path: &Utf8Path) -> serde_json::Value {
+fn get_initial_caddy_configuration_object(admin_api_socket_path: &Utf8Path, api_socket_path: &Utf8Path, http_port: u16) -> serde_json::Value {
     json!({
         "admin": {
             "listen": format!("unix/{}", admin_api_socket_path),
@@ -123,7 +123,7 @@ fn get_initial_caddy_configuration_object(admin_api_socket_path: &Utf8Path, api_
             "http": {
                 "servers": {
                     "srv0": {
-                        "listen": [":80"],
+                        "listen": [format!(":{http_port}")],
                         "routes": [{
                             "match": [{ "path": ["/_sscdc/*"] }],
                             "handle": [
@@ -150,7 +150,7 @@ async fn request_uds(path: &Utf8Path, request: Request) -> http_client::http_typ
     async_h1::connect(stream, request).await
 }
 
-pub async fn start_caddy(api_socket_path: &Utf8Path, sockets_directory_path: &Utf8Path) -> Result<CaddyController> {
+pub async fn start_caddy(api_socket_path: &Utf8Path, sockets_directory_path: &Utf8Path, http_port: u16) -> Result<CaddyController> {
     let caddy_admin_socket_path = sockets_directory_path.join("caddy-admin-api.sock");
 
     // Stop not properly cleaned up proxy.
@@ -162,7 +162,7 @@ pub async fn start_caddy(api_socket_path: &Utf8Path, sockets_directory_path: &Ut
     // Spawn a new proxy.
     let process = Command::new(caddy_path).args(&["run", "--config", "-"]).stdin(Stdio::piped()).spawn()?;
 
-    let initial_configuration_object = get_initial_caddy_configuration_object(&caddy_admin_socket_path, api_socket_path);
+    let initial_configuration_object = get_initial_caddy_configuration_object(&caddy_admin_socket_path, api_socket_path, http_port);
     let initial_configuration_string = initial_configuration_object.to_string();
     debug!("Initial caddy configuration: {}", initial_configuration_string);
 
diff --git a/src/config.rs b/src/config.rs
index e915061..f50ec7b 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -11,6 +11,7 @@ use validator::Validate;
 
 #[derive(Deserialize, Debug, Validate)]
 pub struct Config {
+    pub http_port: u16,
     pub sites_directory: String,
     pub sockets_directory: String,
     #[validate(nested)]
diff --git a/src/main.rs b/src/main.rs
index 655897e..c5f4ee5 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -32,7 +32,7 @@ async fn main() -> Result<()> {
     let api_socket_path = sockets_directory_path.join("api.sock");
 
     log::info!("Starting the reverse proxy…");
-    let caddy_controller = start_caddy(&api_socket_path, &sockets_directory_path).await?;
+    let caddy_controller = start_caddy(&api_socket_path, &sockets_directory_path, config.http_port).await?;
 
     let (sites_worker, sites_worker_join_handle) = start_sites_worker(config.sites_directory.to_string().into(), caddy_controller).await?;