[add] dockerfile

Dockerfile

@@ -0,0 +1,14 @@
+FROM ubuntu
+
+RUN apt-get update 
+
+RUN apt-get upgrade -y
+
+RUN apt-get install -y curl jq w3m \ 
+  bsdmainutils # for "columns" binary
+
+
+RUN curl -L "https://git.io/tmpmail" > tmpmail && chmod +x tmpmail
+
+
+RUN mv tmpmail /bin/

README.md

@@ -43,6 +43,18 @@ $ yay -S tmpmail-git
 
 Either add it to your system packages, install it with nix-env or try it out in a ephemeral nix-shell `nix-shell -p tmpmail`
 
+### Docker
+
+requirements:
+ - [docker](https://www.docker.com/)
+ - clone this repo
+
+```bash                                                                                        
+$ docker build -t mail .; # Dockerfile available in source code
+$ docker run -it mail /bin/bash; 
+# tmpmail; # already inside a docker container
+```   
+
 ## Usage
 ```console
 $ tmpmail --help