From 9d1b46a30b78626863779200c4bd0a1b184d6edf Mon Sep 17 00:00:00 2001
From: Dan Sullivan <dansullivan@gmail.com>
Date: Sat, 26 Dec 2020 21:20:25 -0500
Subject: [PATCH] adding macOS support via Docker

---
 .dockerignore      |  1 +
 Dockerfile         |  3 +++
 README.md          | 10 ++++++++++
 docker-compose.yml |  9 +++++++++
 4 files changed, 23 insertions(+)
 create mode 100644 .dockerignore
 create mode 100644 Dockerfile
 create mode 100644 docker-compose.yml

diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..a89285e
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1 @@
+*.img
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..ea7aae1
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,3 @@
+FROM ubuntu:latest
+RUN apt-get update
+RUN apt-get install parted udev -y
diff --git a/README.md b/README.md
index 43d07b8..41bb4f1 100644
--- a/README.md
+++ b/README.md
@@ -74,6 +74,16 @@ The filesystem on /dev/loop1 is now 773603 blocks long.
 Shrunk pi.img from 30G to 3.1G
 ```
 
+## macOS Support ##
+
+It is not currently possible to run PiShrink natively in macOS. Included in the repo is a `Dockerfile` and `docker-compose.yml` that should allow you to run PiShrink on a Docker host, including a macOS one.
+
+Note 1: The cloned repo is mounted as a Docker host mount so any output file should be created under `/pishrink` to have it persisted on the host.
+
+Note 2: Only `*.img` is present in the provided `.dockerignore`, if you don't use this extension the created container will include your image, potentially consuming a significant amount of disk space. 
+
+Example: `docker-compose run pishrink /pishrink/pishrink.sh /pishrink/someimage.img`
+
 ## Contributing ##
 
 If you find a bug please create an issue for it. If you would like a new feature added, you can create an issue for it but I can't promise that I will get to it.
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..89c770a
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,9 @@
+version: '2'
+
+services:
+  pishrink:
+    build: .
+    volumes:
+      - .:/pishrink
+      - /dev:/dev
+    privileged: true