1) Add e-mail tunnel support 2) Modify all __new__ to get_instance() 3) init docker build scripts

.dockerignore

@@ -0,0 +1,27 @@
+**/__pycache__
+**/*venv
+**/.classpath
+**/.dockerignore
+**/.env
+**/.git
+**/.gitignore
+**/.project
+**/.settings
+**/.toolstarget
+**/.vs
+**/.vscode
+**/*.*proj.user
+**/*.dbmdl
+**/*.jfm
+**/bin
+**/charts
+**/docker-compose*
+**/compose*
+**/Dockerfile*
+**/node_modules
+**/npm-debug.log
+**/obj
+**/secrets.dev.yaml
+**/values.dev.yaml
+**/.db
+**/.python-version