Deployment_UnstructuredStorage_V1.js

const SocialNetworkProxy = artifacts.require('SocialNetworkProxy')
const SocialNetworkV1 = artifacts.require('SocialNetworkV1')

module.exports = deployer => {
  deployer.then(async () => {
    let proxy, socialNetworkV1

    // 1. Deploy SocialNetworkProxy
    proxy = await deployer.deploy(SocialNetworkProxy)

    // 2. Deploy SocialNetworkV1 contract
    socialNetworkV1 = await deployer.deploy(SocialNetworkV1)

    // 3. Link SocialNetworkProxy with SocialNetworkV1 contract
    await proxy.upgradeTo(socialNetworkV1.address)

    // 4. Update ImageURL via Proxy
    const proxySocialNetwork = SocialNetworkV1.at(proxy.address)
    await proxySocialNetwork.setImageUrl('http://tanookilabs.com/images/tanooki-small@2x-0500fc1e.png')
  })
}