diff --git a/.config/docker_ci.env b/.config/docker_ci.env
new file mode 100644
index 0000000000..d70db4adcc
--- /dev/null
+++ b/.config/docker_ci.env
@@ -0,0 +1,11 @@
+# misskey settings
+# MISSKEY_URL=https://example.tld/
+
+# db settings
+POSTGRES_PASSWORD=ci
+# DATABASE_PASSWORD=${POSTGRES_PASSWORD}
+POSTGRES_USER=postgres
+# DATABASE_USER=${POSTGRES_USER}
+POSTGRES_DB=postgres
+# DATABASE_DB=${POSTGRES_DB}
+DATABASE_URL="postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB}"
diff --git a/.gitignore b/.gitignore
index 7cc7354a4a..670b7a3005 100644
--- a/.gitignore
+++ b/.gitignore
@@ -39,6 +39,7 @@ coverage
 !/.config/docker_example.yml
 !/.config/docker_example.env
 !/.config/cypress-devcontainer.yml
+!/.config/docker_ci.env
 docker-compose.yml
 compose.yml
 .devcontainer/compose.yml