Cache github build action (#88)

* Change Go action to build and add cache

* Add dependency download step

* Rearrange steps

* Remove docker build

* Change build tag

* Enable Build on pull_request

* Add linter checking

* Add linter cache

* Correct spelling

* Change lint cache path

* Cache go/bin instead

* Add go bin to path

* Correct command syntax

* Test linter

* Change cache step id

* Change cache search pattern

* Remove linter cache

.github/workflows/build.yml

@@ -1,27 +1,36 @@
-name: Go
-on: [push]
+name: Build
+on: [push, pull_request]
 jobs:
-
   build:
     name: Build
     runs-on: ubuntu-latest
     steps:
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v1
+
+      - name: Set up Go 1.13
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.13
+        id: go
 
-    - name: Set up Go 1.13
-      uses: actions/setup-go@v1
-      with:
-        go-version: 1.13
-      id: go
+      - name: Cache (dependencies)
+        uses: actions/cache@v1
+        id: cache
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
 
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v1
-
+      - name: Install linter
+        run: "curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin v1.22.2"
 
-    - name: Build, run tests and vet
-      run:  |
-        go build
-        go test
-        go vet
-      env:
-        GO111MODULE: "on"
+      - name: Install dependencies
+        if: steps.cache.outputs.cache-hit != 'true'
+        run: go mod download
 
+      - name: Lint
+        run: |
+          export PATH=$PATH:~/go/bin
+          ./run_tests.sh lint

README.md

@@ -1,22 +1,23 @@
 # dcrlibwallet
 
-[![Build Status](https://img.shields.io/github/workflow/status/raedahgroup/dcrlibwallet/Go)](https://github.com/raedahgroup/dcrlibwallet/actions)
+[![Build Status](https://github.com/raedahgroup/dcrlibwallet/workflows/Build/badge.svg)](https://github.com/raedahgroup/dcrlibwallet/actions)
 
 A Decred wallet library written in golang for [dcrwallet](https://github.com/decred/dcrwallet)
 
 ## Build Dependencies
 
 [Go( >= 1.11 )](http://golang.org/doc/install)  
-[Gomobile](https://github.com/golang/go/wiki/Mobile#tools) (correctly init'd with gomobile init)  
+[Gomobile](https://github.com/golang/go/wiki/Mobile#tools) (correctly init'd with gomobile init)
 
 ## Build Instructions using Gomobile
 
-To build this libary, clone the project 
+To build this libary, clone the project
 
 ```bash
 go get -t github.com/raedahgroup/dcrlibwallet
 cd $GOPATH/src/github.com/raedahgroup/dcrlibwallet/
 ```
+
 and run the following commands in dcrlibwallet directory.
 
 ```bash

run_tests.sh

@@ -35,5 +35,3 @@ elif [[ "$option" = "all" ]]; then
 else
     echo "Usage: ./run_tests.sh [all | build | lint]"
 fi
-
-