Use source_ami_filter for RHEL 7 (#14)

* Use source_ami_filter instead of hard-coded source_ami ID

* Include deleting snapshot and deregister ami if AMI already exist

* Change default region to Canada Central

* Add Publish RHEL AMI step in workflow

* Fix working-dir path

* Change default region for ubuntu

.github/workflows/publish-images.yml

@@ -20,13 +20,19 @@ jobs:
         uses: hashicorp-contrib/setup-packer@v1
 
       - name: Publish Ubuntu-20.04 AMI
-        working-directory: ubuntu/ubuntu-20-04
+        working-directory: aws/ubuntu/ubuntu-20-04
         run: |
           packer init -upgrade ubuntu-focal.pkr.hcl
           packer build -var-file="config.auto.pkrvars.hcl" .
 
       - name: Publish Ubuntu-18.04 AMI
-        working-directory: ubuntu/ubuntu-18-04
+        working-directory: aws/ubuntu/ubuntu-18-04
         run: |
           packer init -upgrade ubuntu-bionic.pkr.hcl
+          packer build -var-file="config.auto.pkrvars.hcl" .
+      
+      - name: Publish RHEL7 AMI
+        working-directory: aws/rhel/rhel7
+        run: |
+          packer init -upgrade rhel7.pkr.hcl
           packer build -var-file="config.auto.pkrvars.hcl" .

aws/rhel/rhel7/config.auto.pkrvars.hcl

@@ -1,3 +1,3 @@
 aws_access_key = ""
 aws_secret_key = ""
-aws_region = "us-west-2"
+aws_region = "ca-central-1"

aws/rhel/rhel7/rhel7.pkr.hcl

@@ -36,8 +36,18 @@ source "amazon-ebs" "rhel7" {
   region        = "${var.aws_region}"
   access_key    = "${var.aws_access_key}"
   secret_key    = "${var.aws_secret_key}"
-  source_ami    = "ami-02d40d11bb3aaf3e5"
+  source_ami_filter {
+    filters = {
+      name                = "RHEL-7*-x86_64-*"
+      root-device-type    = "ebs"
+      virtualization-type = "hvm"
+    }
+    most_recent = true
+    owners      = ["309956199498"]
+  }
   ssh_username = "ec2-user"
+  force_deregister      = true
+  force_delete_snapshot = true
 }
 
 build {

aws/ubuntu/ubuntu-18-04/config.auto.pkrvars.hcl

@@ -1,3 +1,3 @@
 aws_access_key = ""
 aws_secret_key = ""
-aws_region = "us-west-2"
+aws_region = "ca-central-1"

aws/ubuntu/ubuntu-20-04/config.auto.pkrvars.hcl

@@ -1,3 +1,3 @@
 aws_access_key = ""
 aws_secret_key = ""
-aws_region = "us-west-2"
+aws_region = "ca-central-1"