Building a development server?

Question

Software Deployment

Good time, there was a desire to make a server for testing, deploying applications or sites. It is necessary to remove the load from the client /, improve the skills of working with the server.
Network:
Wiring diagram for
wireless devices: (client > router < server)
or
wire: (server > client > bridge > router);
ARP list is configured on the router, DHCP is enabled,
Client (laptop, win10 / lan & wifi*);
Server (old computer, no OS, lan / wifi*);
* - Wifi works on ubuntu, but not on coreos :(
Server:
There were several questions:
0 . I have never done anything like this in terms of server arrangement.
>Question: Where to start?
I gave several solutions:
1. coreos & docker + my images / containers = what is the right way to raise it to "bare metal" from an iso image?
>Question 1: why does the installation script complain about the config when I checked it with a validator? I ended up not being able to log in.
>Question 2: Does the default docker/application address affect when connecting to the server's external IP, and if so, how to configure it? there was a precedent with eclipse che...
> Question 3: ssh. generated private / public keys, what to write in the config, what in PuTTY?
> PS you can't pick up a bunch of wifi, right? ifconfig does not see wifi adapter, wpa/wireless soft not set...
2 . ubuntu server + my stack according to the situation.
> any guides?
> What extra. options needed during installation
3. or maybe there are builders of distributors where I can immediately throw everything I need?
how to delegate the whole routine to the server? what are the solutions?
how to bring everything to the state: "select a stack, write / import config - profit".

Answer 1

remained only 1 problem, how to configure the connection between 2 machines?
ssh writes - : Connection refused/ Cannot assign requested address
from Windows: ipconfig
Ethernet adapter Ethernet:
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::97e:cd45:3c40:5420%3
Autoconfiguration IPv4 Address. . : 169.254.84.32
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
c coreos: ifconfig
flags=4163 mtu 1500
inet6 ... prefixlen 64 scopeid 0x20
ether ... txqueuelen 1000 (Ethernet)
RX packets 169 bytes 16423 (16.0 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 47 bytes 10179 (9.9 KiB)
TX errors 0 dropped 0 overruns 0 carrier 3 collisions 0