Resolve #3, environment variables'

Readme.md

@@ -1,5 +1,34 @@
+### mongo with efs
+
+```hcl
+module "mongo_efs" {
+  source = "github.com/clibot/terraform-aws-ecs-mongo"
+
+  name  = "mongo-efs"
+  image = "docker.io/mongo:4.2.6"
+
+  cluster = aws_ecs_cluster.development.name
+
+  cpu    = 256
+  memory = 512
+
+  volume_type = "efs"
+
+  vpc_id   = module.develop_vpc.vpc_id
+  vpc_cidr = module.develop_vpc.vpc_cidr_block
+
+  subnets = [
+    module.develop_vpc.public_subnets[0],
+    module.develop_vpc.public_subnets[1],
+    module.develop_vpc.public_subnets[2]
+  ]
+}
+```
+
 ### mongo with ebs
 
+When using ebs the variable `volume_size` is required, default is `0`
+
 ```hcl
 module "mongo_ebs" {
   source = "github.com/clibot/terraform-aws-ecs-mongo"
@@ -26,7 +55,9 @@ module "mongo_ebs" {
 }
 ```
 
-### mongo with efs
+### mongo with environment variables
+
+Is it possible to specify environment variables to pass to the docker image, default is `[]`
 
 ```hcl
 module "mongo_efs" {
@@ -50,5 +81,10 @@ module "mongo_efs" {
     module.develop_vpc.public_subnets[1],
     module.develop_vpc.public_subnets[2]
   ]
+
+  environment = [
+    { name = "MONGO_INITDB_ROOT_USERNAME", value = "admin" },
+    { name = "MONGO_INITDB_ROOT_PASSWORD", value = "asdomaresemperdomina" }
+  ]
 }
 ```

container-definitions.tmpl

@@ -3,7 +3,12 @@
   "image": "${image}",
   "cpu": ${cpu},
   "memory": ${memory},
-  "environment": [],
+  "environment": [
+    %{ for variable in jsondecode(environment) ~}
+      { "name": "${variable.name}", "value": "${variable.value}" },
+    %{ endfor ~}
+    { "name": "_", "value": "_" }
+  ],
   "portMappings": [{
     "containerPort": 27017,
     "hostPort": 27017,

services.tf

@@ -9,6 +9,7 @@ data "template_file" "container_definitions" {
     memory             = var.memory
     volume_name        = var.name
     volume_path        = "/data/db"
+    environment        = jsonencode(var.environment)
     logs_group         = var.name
     logs_stream_prefix = var.name
     logs_region        = data.aws_region.this.name

variables.tf

@@ -38,3 +38,8 @@ variable "volume_size" {
   type    = number
   default = 0
 }
+
+variable "environment" {
+  type    = list(object({ name = string, value = string }))
+  default = []
+}