Misc changes.

Some small changes in general:
- Moved the SQL Version check struct into the function.
- Updated hadolint to 2.0.0
- Fixed hadolint 2.0.0 warnings
- Updated github workflows
- Added .editorconfig for some general shared editor settings.

.editorconfig

@@ -0,0 +1,23 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+
+[*.{rs,py}]
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.{yml,yaml}]
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[Makefile]
+indent_style = tab