Docker setup and read yaml

.gitignore

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+# --- OS Generated Files ---
+.DS_Store
+Thumbs.db
+
+# --- Go / Golang ---
+main
+code/main
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+*.test
+*.out
+
+# --- COBOL / C ---
+*.out
+*.o
+*.obj
+*.so
+*.dll
+*.gnt
+*.int
+*.lst
+*.dylib
+
+# --- Environment / Secrets ---
+.env
+.env.*
+!.env.example