Merge pull request #3511 from KevenLi8888/add-dockerignore

ci: add .dockerignore to exclude env files to prevent potential key leakages 避免潜在的密钥泄漏

.dockerignore

@@ -0,0 +1,8 @@
+# local env files
+.env*.local
+
+# docker-compose env files
+.env
+
+*.key
+*.key.pub