Allow deploy with different version of XDC on devnet (#218)

cicd/README.md

@@ -17,7 +17,10 @@ Each PR merged into `dev-upgrade` will trigger below actions:
 ```
 {
   "xdc0": {
-    "pk": {{PRIVATE KEY}}
+    "pk": {{PRIVATE KEY}},
+    "address": {{XDC wallet address}},
+    "imageTag": {{Optional field to run different version of XDC}},
+    "logLevel": {{Optional field to adjust the log level for the container}}
   },
   "xdc1": {...},
   "xdc{{NUMBER}}: {...}
@@ -35,12 +38,15 @@ Each PR merged into `dev-upgrade` will trigger below actions:
   
 You are all set!
 
-## Testnet
-*** WIP ***
-Testnet release build are triggered by cutting a "pre-release" tag which matches the name of `TESTNET-{{release-version}}` from dev-upgrade or master branch.
-An example can be found here: https://github.com/XinFinOrg/XDPoSChain/releases/tag/Testnet-v2.0.0
-For more information, refer to github documentation on the release: https://docs.github.com/en/repositories/releasing-projects-on-github/about-releases
-
-## Mainnet
-*** WIP ***
-Mainnet release are triggered by making a normal release tag with name starting with `v` (stands for version) from the master branch.
+## How to run different version of XDC on selected nodes
+1. Create a new image tag:
+  - Check out the repo
+  - Run docker build `docker build -t xdc-devnet -f cicd/devnet/Dockerfile .`
+  - Run docker tag `docker tag xdc-devnet:latest xinfinorg/devnet:test-{{put your version number here}}`
+  - Run docker push `docker push xinfinorg/devnet:test-{{Version number from step above}}`
+2. Adjust node-config.json
+  - Download the node-config.json from s3
+  - Add/update the `imageTag` field with value of `test-{{version number you defined in step 1}}` for the selected number of nodes you want to test with
+  - Optional: Adjust the log level by add/updating the field of `logLevel`
+  - Save and upload to s3
+3. Make a dummy PR and get merged. Wait it to be updated.

cicd/devnet/terraform/container-definition.tpl

@@ -1,7 +1,7 @@
 [
   {
     "name": "tfXdcNode",
-    "image": "xinfinorg/${xdc_environment}:latest",
+    "image": "xinfinorg/${xdc_environment}:${image_tag}",
     "environment": [
       {"name": "PRIVATE_KEYS", "value": "${private_keys}"},
       {"name": "LOG_LEVEL", "value": "${log_level}"},

cicd/devnet/terraform/ecs.tf

@@ -4,10 +4,11 @@ data template_file devnet_container_definition {
 
   vars = {
     xdc_environment = "devnet"
+    image_tag = "${lookup(each.value, "imageTag", "latest")}"
     node_name = "${each.key}"
     private_keys = "${each.value.pk}"
     cloudwatch_group = "tf-${each.key}"
-    log_level = "${local.logLevel}"
+    log_level = "${lookup(each.value, "logLevel", "${local.logLevel}")}"
   }
 }