Deploying smart contract using truffle on private blockchain node on docker

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I am facing problems deploying a smart contract on my private blockchain network. I created my blockchain network on three VMs (miners) using puppeth on a fourth VM (controller) by following the steps in this blog: https://medium.com/@collin.cusce/using-puppeth-to-manually-create-an-ethereum-proof-of-authority-clique-network-on-aws-ae0d7c906cce

Afterwards, I installed truffle on one of the miners VMs and i initialized truffle using the command:

truffle init

Then I wrote a simple hello world smart contract, compiled it and deployed it on truffle development blockchain and it worked. However, I tried to deploy it on my private blockchain but I can't connect to the network.

The admin.nodeInfo command in geth console returns the folowing output:

docker exec -it 954cd3955065 geth attach ipc:/root/.ethereum/geth.ipc
Welcome to the Geth JavaScript console!

instance: Geth/v1.9.25-unstable-ead81461-20201123/linux-amd64/go1.15.5
coinbase: 0xe8cc4bea2cfdfd14cddefe1141bedd109576b9a9
at block: 78558 (Tue Dec 01 2020 22:01:02 GMT+0000 (UTC))
 datadir: /root/.ethereum
 modules: admin:1.0 clique:1.0 debug:1.0 eth:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 txpool:1.0 web3:1.0

To exit, press ctrl-d
> admin.nodeInfo
{
  enode: "enode://7206ca3c62f6db47e1230dcf14a765d4c9b4870a66470dbb21fcc5ed2fab2167d6bcc47eec8044c42037b3e6e0017aeb8ddfc3580471da54a6c7274a0c1fe46b@10.100.2.32:30303",
  enr: "enr:-Je4QGXlVAESp8r2s1uHBJxoDLWQo8IvZsbe5sX2YRBb0un9Gdlt8nfDKQBR_j0lDPtaoCCuis4cJJlqtEHfa4tLO2EIg2V0aMfGhG5b-B6AgmlkgnY0gmlwhApkAiCJc2VjcDI1NmsxoQNyBso8YvbbR-EjDc8Up2XUybSHCmZHDbsh_MXtL6shZ4N0Y3CCdl-DdWRwgnZf",
  id: "027a351994ac1b127df56180b6210310cc0164f17f1b12c167cb167c4ffaa122",
  ip: "10.100.2.32",
  listenAddr: "[::]:30303",
  name: "Geth/v1.9.25-unstable-ead81461-20201123/linux-amd64/go1.15.5",
  ports: {
    discovery: 30303,
    listener: 30303
  },
  protocols: {
    eth: {
      config: {
        byzantiumBlock: 0,
        chainId: 1515,
        clique: {...},
        constantinopleBlock: 0,
        eip150Block: 0,
        eip150Hash: "0x0000000000000000000000000000000000000000000000000000000000000000",
        eip155Block: 0,
        eip158Block: 0,
        homesteadBlock: 0,
        istanbulBlock: 0,
        petersburgBlock: 0
      },
      difficulty: 98201,
      genesis: "0x17f752387c901db617cf0594ecd2cb9811dfcd666318c2e0e7cb0239471da979",
      head: "0xf8a37d0390558746901faa55463c127c553f02cf2d23ce0cb469fcd470c810f9",
      network: 1515
    }
  }
}

I tried adding the network configuration in truffle-config.js like this:

devnet2: {
    host: "localhost", 
    port: "30303", //port where the node is 
    network_id: "*",   
    from: 0x91cd7b879fefff34259d577a56d290b3315bf9b3    // Treats this network as if it was a public net. (default: false)
    }

then, when deploying using the command truffle deploy --network devnet2 i always get this error:

Compiling your contracts...
===========================
> Everything is up to date, there is nothing to compile.


/usr/local/lib/node_modules/truffle/build/webpack:/packages/provider/index.js:56
        throw new Error(errorMessage);
^
Error: There was a timeout while attempting to connect to the network.
       Check to see that your provider is valid.
       If you have a slow internet connection, try configuring a longer timeout in your Truffle config. Use the networks[networkName].networkCheckTimeout property to do this.
    at Timeout.setTimeout (/usr/local/lib/node_modules/truffle/build/webpack:/packages/provider/index.js:56:1)
    at ontimeout (timers.js:436:11)
    at tryOnTimeout (timers.js:300:5)
    at listOnTimeout (timers.js:263:5)
    at Timer.processTimers (timers.js:223:10)

I tried extending the timeout limit but it didn't work. I also tried using Web3 Providers (HTTPProvider and IPCProvider) but without any luck (i can give more details, if needed).

Any help is well appreciated because i spent a lot of time on it without getting anywhere. Unfortunately, i couldn't find anything on deploying smart contracts to a node that is running on docker. If needed, i can gladly give more details about what i did.

dockerblockchainethereumtrufflegeth