Set default region if none is provided for SSM control files (#6)

* set default region if none is provided for SSM control files

.github/workflows/main.yml

@@ -0,0 +1,22 @@
+name: Binary Release
+
+on: 
+  release:
+    types: [created]
+
+jobs:
+  releases-matrix:
+    name: Release Go Binary
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        # build and publish in parallel: linux/amd64, windows/amd64, darwin/amd64
+        goos: [linux, windows, darwin]
+        goarch: [amd64]
+    steps:
+    - uses: actions/checkout@v2
+    - uses: wangyoucao577/go-release-action@master
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        goos: ${{ matrix.goos }}
+        goarch: ${{ matrix.goarch }}

README.md

@@ -6,7 +6,7 @@
 
 `deco` has three options currently, `validate`, `show`, and `run`.
 
-```
+```text
 deco gets your app ready to run when a container
 starts.  For example: the filters allow you to specify
 individual files to filter and key/value pairs to use when

control/ssm.go

@@ -1,6 +1,8 @@
 package control
 
 import (
+	"os"
+
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/ssm"
@@ -19,8 +21,15 @@ type SSM struct {
 func NewSSM(opts ...SSMOption) *SSM {
 	Logger.Println("[INFO] creating new ssm provider")
 
+	region := "us-east-1"
+	if r, ok := os.LookupEnv("AWS_REGION"); ok {
+		region = r
+	} else if r, ok := os.LookupEnv("AWS_DEFAULT_REGION"); ok {
+		region = r
+	}
+
 	s := SSM{}
-	s.config = aws.NewConfig()
+	s.config = aws.NewConfig().WithRegion(region)
 
 	for _, opt := range opts {
 		opt(&s)