This project can be used for using a single Ethereum node in Docker which runs in a private network. The steps below will take to through the setup of single node to web3 deploy.

1. Clone the project into your machine:

https://github.com/subhasisbanik/ethereumDocker.git

2. Make the Docker image:

cd ethereumDocker
docker build -t {image-name} .

3. Run the Docker image as a container:

docker run -d -i -p {docker-rpc-port}:{host-rpc-port} {image-name}

4. Now enter the container:

docker exec -it <container-id/container-name> /bin/bash

5. Make a folder in /root for the geth data to be stored:

cd /root
mkdir testnet
cd testnet
mkdir datadir
cd datadir
mkdir keystore
cd ~

6. Now make a new geth account with any password or empty and correspondingly update the password.txt that will be made:

geth --datadir "/root/testnet/datadir" account new
cd testnet
touch password.txt
cd ~

Note down the account number as you will need it in the next step.

7. Now run puppeth to prepare the genesis.json for your private chain setup:

   cd testnet
   puppeth
   

   Please follow the steps by selecting the options in the interactive shell:

   a. 2. Configure new genesis
   

   b. 1. Ethash - proof-of-work
   

   c. Which accounts should be pre-funded? (advisable at least one) 0x{account-number}
   

   d. Specify your chain/network ID if you want an explicit one (default = random)
   {Enter any value}

   e. Anything fun to embed into the genesis block? (max 32 bytes)
   {Skip with enter}

   f. 2. Save existing genesis
   

   Now after this you will have your genesis.json file to initialize geth

8. Now we need to initialize geth:

   geth --datadir "/root/testnet/datadir" init genesis.json
   

9. Now we need to run geth as a background process:

   nohup geth --datadir "/root/testnet/datadir" --networkid {previously-entered-networkid-puppeth} --port {portid} --identity {any-identifiable-name} --verbosity 3 --rpc --rpcapi "eth,web3,net,admin,miner,personal" --rpcport {rpc-port-docker} --rpcaddr "0.0.0.0" --rpccorsdomain "*" --mine --minerthreads 2 --unlock 0 --password "/root/testnet/password.txt" console &
   

   Here we need to replace the values with '{}' with valid data.

10. Now enter the geth console with rpc:
    

geth attach rpc:http://127.0.0.1:8545

11. Go to https://remix.ethereum.org and copy the below code to generate a sample web3 deploy:
    

pragma solidity ^0.4.0;
 contract test {

     uint _val;
     function getValue() returns(uint){
         return _val;
     }
     function setValue(uint val){
         _val=val;
     }
 }

12. Copy the web3 deploy and paste it in the geth console and wait for it to be mined.

Congratulations, you have succssfully set up a private chain Ethereum.

For more details in Ethereum, http://www.ethdocs.org/en/latest/ethereum-clients/cpp-ethereum/index.html#quick-start