I pull your image on to my docker container but i wasn't able to run it.

docker run -it --rm -v ./nyt.mp4 -o output.gif --to 5 --compress 0 --colors 255 --resize 320:-1
unknown shorthand flag: 'o' in -o

what I am doing wrong here?

Got an gifsicle:: empty file when trying to convert mov file using described command. It also creates an 0 bite gif output file ( ͡° ʖ̯ ͡°)

I installed docker locally (OSX) with glifify-docker and it works great!

But when I tried to install it on a container-optimized Google Compute Engine image, I get an empty file:

~$ sudo docker run -it --rm -v /home/test:/data maxogden/gifify pod.mp4 -o pod.gif
gifsicle:: empty file

Here is the version:
test@gifify:~$ sudo docker version
Client version: 1.6.0
Client API version: 1.18
Go version (client): go1.4.2
Git commit (client): 4749651
OS/Arch (client): linux/amd64
Server version: 1.6.0
Server API version: 1.18
Go version (server): go1.4.2
Git commit (server): 4749651
OS/Arch (server): linux/amd64

The images:
$ sudo docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
maxogden/gifify latest 9cd65cf635b4 3 months ago 476.5 MB
google/cadvisor 0.8.0 4cde3eeb4b8d 4 months ago 17.79 MB
kubernetes/pause go 6c4579af347b 10 months ago 239.8 kB

And the directory:
$ ls -l
total 584
-rw-r--r-- 1 root test 594916 May 19 21:15 pod.mp4
-rw-r--r-- 1 root root 0 May 19 22:24 pod.gif

If you run:

$ docker run -it --rm -v $(pwd):/data maxogden/gifify --version
...
2.1.1

Whereas gifify in npm is currently at 2.1.5 (and has a fix I'd like). The public registry image is of course prebuilt. I could clone this repo and build it myself, but I wonder if there's a better way to keep gifify up to date without too much effort from you? I honestly don't know, and have been running into a similar issue when using docker for builds / tools.

One way I found is to do a COPY /package.json / within the Dockerfile, and then as long as the version is pinned it will rebuild with proper caching. But that doesn't help this case too much, because this is a public tool.

Anyway, thanks for this great image! It's been extremely useful!