diff --git a/devbox.json b/devbox.json
index f239227..5527366 100644
--- a/devbox.json
+++ b/devbox.json
@@ -16,6 +16,7 @@
     "scalafmt@latest",
     "sqlc@latest",
     "github:fdietze/sqlc-gen-from-template/6295f7a",
+    "ngrok@latest",
   ],
   "shell": {
     // "init_hook": "export PLAYWRIGHT_SKIP_VALIDATE_HOST_REQUIREMENTS=true PLAYWRIGHT_BROWSERS_PATH=$(nix build --print-out-paths nixpkgs#playwright-driver.browsers)",
diff --git a/devbox.lock b/devbox.lock
index 029e848..4d38eda 100644
--- a/devbox.lock
+++ b/devbox.lock
@@ -533,6 +533,54 @@
         }
       }
     },
+    "ngrok@latest": {
+      "last_modified": "2024-07-31T08:48:38Z",
+      "resolved": "github:NixOS/nixpkgs/c3392ad349a5227f4a3464dce87bcc5046692fce#ngrok",
+      "source": "devbox-search",
+      "version": "3.13.0",
+      "systems": {
+        "aarch64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/70kgx0irv8drp2hz2yzlqav6bfsjr4sh-ngrok-3.13.0",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/70kgx0irv8drp2hz2yzlqav6bfsjr4sh-ngrok-3.13.0"
+        },
+        "aarch64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/8c11c6rm3j1al4yc835v323hdyaggqmm-ngrok-3.13.0",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/8c11c6rm3j1al4yc835v323hdyaggqmm-ngrok-3.13.0"
+        },
+        "x86_64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/73yk7nhkq8k6gxm9j7r5rvi83fxn3jv3-ngrok-3.13.0",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/73yk7nhkq8k6gxm9j7r5rvi83fxn3jv3-ngrok-3.13.0"
+        },
+        "x86_64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/cfwpppp4cy2da9qraq4vsgv5cvswv1gp-ngrok-3.13.0",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/cfwpppp4cy2da9qraq4vsgv5cvswv1gp-ngrok-3.13.0"
+        }
+      }
+    },
     "process-compose@latest": {
       "last_modified": "2024-05-29T10:04:41Z",
       "resolved": "github:NixOS/nixpkgs/ac82a513e55582291805d6f09d35b6d8b60637a1#process-compose",
diff --git a/process-compose.yml b/process-compose.yml
index 101a2cd..b76113f 100644
--- a/process-compose.yml
+++ b/process-compose.yml
@@ -1,3 +1,6 @@
+# https://github.com/F1bonacc1/process-compose#readme
+
+
 environment:
   - "FORCE_COLOR=1"
 processes:
@@ -56,20 +59,19 @@ processes:
     command: echo schema.sql | entr -n bash -c "echo seeding database...; rm -f data.db; sqlite3 -init /dev/null data.db < schema.sql && echo success."
 
   auth:
+    environment:
+      - "APP_DOMAINS=$AUTHN_APP_DOMAINS"
+      - "AUTHN_URL=https://ox-darling-heartily.ngrok-free.app"
+      - "PORT=3001"
+      - "PUBLIC_PORT=3000"
+      - "SECRET_KEY_BASE=test"
+      - "DATABASE_URL=sqlite3:///tmp/authn.db"
+      - "ENABLE_SIGNUP=false"
+      - "HTTP_AUTH_USERNAME=admin"
+      - "HTTP_AUTH_PASSWORD=adminpw"
+      - "TWITTER_OAUTH_CREDENTIALS=$AUTHN_TWITTER_OAUTH_CREDENTIALS"
     command: |
       # https://github.com/keratin/authn-server/tree/main/docs#readme
-      docker volume rm authn-data
-      docker run --name authn --rm -p 3000:3000 -p 3001:3001 \
-        -v authn-data:/data \
-        -e APP_DOMAINS="localhost" \
-        -e AUTHN_URL="http://localhost:3000" \
-        -e PORT=3001 \
-        -e PUBLIC_PORT=3000 \
-        -e SECRET_KEY_BASE="test" \
-        -e DATABASE_URL="sqlite3://localhost//data/authn.db" \
-        -e ENABLE_SIGNUP=false \
-        -e HTTP_AUTH_USERNAME="admin" \
-        -e HTTP_AUTH_PASSWORD="adminpw" \
-        keratin/authn-server:latest \
-        sh -c "./authn migrate && ./authn server"
+      ../authn-server/authn-server migrate && \
+      ../authn-server/authn-server server