add build into make build-docker (#5253)

## Description

add make build-linux into `make build-docker` it is not documented that the cmd depends on the build folder so this aids in helping the user. 

Closes: #XXX

DOCKER/README.md

@@ -30,7 +30,7 @@ To get started developing applications, see the [application developers guide](h
 
 A quick example of a built-in app and Tendermint core in one container.
 
-```
+```sh
 docker run -it --rm -v "/tmp:/tendermint" tendermint/tendermint init
 docker run -it --rm -v "/tmp:/tendermint" tendermint/tendermint node --proxy_app=kvstore
 ```
@@ -39,9 +39,7 @@ docker run -it --rm -v "/tmp:/tendermint" tendermint/tendermint node --proxy_app
 
 To run a 4-node network, see the `Makefile` in the root of [the repo](https://github.com/tendermint/tendermint/blob/master/Makefile) and run:
 
-```
-make build-linux
-make build-docker-localnode
+```sh
 make localnet-start
 ```
 

Makefile

@@ -188,7 +188,7 @@ sync-docs:
 ###                            Docker image                                 ###
 ###############################################################################
 
-build-docker:
+build-docker: build-linux
 	cp $(OUTPUT) DOCKER/tendermint
 	docker build --label=tendermint --tag="tendermint/tendermint" DOCKER
 	rm -rf DOCKER/tendermint
@@ -216,8 +216,8 @@ build_c-amazonlinux:
 .PHONY: build_c-amazonlinux
 
 # Run a 4-node testnet locally
-localnet-start: localnet-stop build-docker-localnode
-	@if ! [ -f build/node0/config/genesis.json ]; then docker run --rm -v $(CURDIR)/build:/tendermint:Z tendermint/localnode testnet --config /etc/tendermint/config-template.toml --v 4 --o . --populate-persistent-peers --starting-ip-address 192.167.10.2; fi
+localnet-start: localnet-stop build-linux
+	@if ! [ -f build/node0/config/genesis.json ]; then docker run --rm -v $(CURDIR)/build:/tendermint:Z tendermint/localnode testnet --config /etc/tendermint/config-template.toml --o . --starting-ip-address 192.167.10.2; fi
 	docker-compose up
 .PHONY: localnet-start
 

docs/networks/docker-compose.md

@@ -20,9 +20,7 @@ docker image.
 Note the binary will be mounted into the container so it can be updated without
 rebuilding the image.
 
-```
-cd $GOPATH/src/github.com/tendermint/tendermint
-
+```sh
 # Build the linux binary in ./build
 make build-linux
 
@@ -34,7 +32,7 @@ make build-docker-localnode
 
 To start a 4 node testnet run:
 
-```
+```sh
 make localnet-start
 ```
 
@@ -48,9 +46,8 @@ on ports 26656-26657, 26659-26660, 26661-26662, and 26663-26664 respectively.
 
 To update the binary, just rebuild it and restart the nodes:
 
-```
+```sh
 make build-linux
-make localnet-stop
 make localnet-start
 ```
 
@@ -62,31 +59,46 @@ calling the `tendermint testnet` command.
 The `./build` directory is mounted to the `/tendermint` mount point to attach
 the binary and config files to the container.
 
-To change the number of validators / non-validators change the `localnet-start` Makefile target:
+To change the number of validators / non-validators change the `localnet-start` Makefile target [here](../../makefile):
 
-```
+```sh
 localnet-start: localnet-stop
-	@if ! [ -f build/node0/config/genesis.json ]; then docker run --rm -v $(CURDIR)/build:/tendermint:Z tendermint/localnode testnet --v 5 --n 3 --o . --populate-persistent-peers --starting-ip-address 192.167.10.2 ; fi
-	docker-compose up
+  @if ! [ -f build/node0/config/genesis.json ]; then docker run --rm -v $(CURDIR)/build:/tendermint:Z tendermint/localnode testnet --v 5 --n 3 --o . --populate-persistent-peers --starting-ip-address 192.167.10.2 ; fi
+  docker-compose up
 ```
 
 The command now will generate config files for 5 validators and 3
-non-validators network.
-
-Before running it, don't forget to cleanup the old files:
+non-validators. Along with generating new config files the docker-compose file needs to be edited.
+Adding 4 more nodes is required in order to fully utilize the config files that were generated.
 
+```yml
+  node3: # bump by 1 for every node
+    container_name: node3 # bump by 1 for every node
+    image: "tendermint/localnode"
+    environment:
+      - ID=3
+      - LOG=${LOG:-tendermint.log}
+    ports:
+      - "26663-26664:26656-26657" # Bump 26663-26664 by one for every node
+    volumes:
+      - ./build:/tendermint:Z
+    networks:
+      localnet:
+        ipv4_address: 192.167.10.5 # bump the final digit by 1 for every node
 ```
-cd $GOPATH/src/github.com/tendermint/tendermint
 
+Before running it, don't forget to cleanup the old files:
+
+```sh
 # Clear the build folder
 rm -rf ./build/node*
 ```
 
-## Configuring abci containers
+## Configuring ABCI containers
 
-To use your own abci applications with 4-node setup edit the [docker-compose.yaml](https://github.com/tendermint/tendermint/blob/master/docker-compose.yml) file and add image to your abci application.
+To use your own ABCI applications with 4-node setup edit the [docker-compose.yaml](https://github.com/tendermint/tendermint/blob/master/docker-compose.yml) file and add image to your ABCI application.
 
-```
+```yml
  abci0:
     container_name: abci0
     image: "abci-image"
@@ -133,9 +145,9 @@ To use your own abci applications with 4-node setup edit the [docker-compose.yam
 
 ```
 
-Override the [command](https://github.com/tendermint/tendermint/blob/master/networks/local/localnode/Dockerfile#L12) in each node to connect to it's abci.
+Override the [command](https://github.com/tendermint/tendermint/blob/master/networks/local/localnode/Dockerfile#L12) in each node to connect to it's ABCI.
 
-```
+```yml
   node0:
     container_name: node0
     image: "tendermint/localnode"

networks/local/localnode/Dockerfile

@@ -1,5 +1,4 @@
 FROM alpine:3.7
-MAINTAINER Greg Szabo <greg@tendermint.com>
 
 RUN apk update && \
     apk upgrade && \