Adding readme

Readme.md

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+# samba-server
+
+A basic single user samba-server suitable for small scale NAS-like installations where having multi-user security is not important.
+
+## Running Samba Server
+
+No real tricks here, the only essential thing is setting a password in the environment vars
+
+To do so with a docker-compose file:
+
+```yaml
+version: "2"
+
+services:
+    samba:
+        image: amdavidson/samba-server 
+        restart: always
+        environment:
+            SMBPW: "Hunter22"
+        ports:
+            - "139:139"
+            - "445:445"
+            - "138:138/udp"
+            - "137:137/udp"
+        volumes:
+            - "/host/share/folder:/share"
+```