feat: Implement environment variable expansion in configuration parsing

yarlson · Oct 21, 2024 · 692728b · 692728b
1 parent f2a9c60
commit 692728b
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Showing 2 changed files with 6 additions and 4 deletions.
diff --git a/README.md b/README.md
@@ -81,9 +81,9 @@ storages:
     image: postgres:16
       - postgres_data:/var/lib/postgresql/data
     env_vars:
-      - POSTGRES_PASSWORD=S3cret
-      - POSTGRES_USER=my-app
-      - POSTGRES_DB=my-app
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
+      - POSTGRES_USER=${POSTGRES_USER}
+      - POSTGRES_DB=${POSTGRES_DB}
 
 volumes:
   - postgres_data

diff --git a/pkg/config/config.go b/pkg/config/config.go
@@ -77,8 +77,10 @@ type Volume struct {
 }
 
 func ParseConfig(data []byte) (*Config, error) {
+	expandedData := os.ExpandEnv(string(data))
+
 	var config Config
-	if err := yaml.Unmarshal(data, &config); err != nil {
+	if err := yaml.Unmarshal([]byte(expandedData), &config); err != nil {
 		return nil, fmt.Errorf("error parsing YAML: %v", err)
 	}