+zipalign and apt clean

[mautematico]

¡Hola!

Thanks for this image, it has been very helpful for me.

I noted it is missing zipalign and some apt cleanup steps; you may see benefit on merging them.

[mautematico]

Sorry, I did not meant to add awscli to this same pullrequest.

I use awscli to upload final apk to custom s3 bucket; however that last commit might not fit well on the scope of your image. Please feel free to ignore that last commit and instead do merge up to f4527b8.

((of course, if you find that awscli fits, please do merge it as well))

Saludos

[Kusumoto]

Please remove awscli because this is not generic package for use this image.

[fabdelgado]

Hi, I also need to sign the apk with zipalign, when will you add these libraries to master?