create packer build file

meta/build.pkr.hcl

@@ -0,0 +1,11 @@
+# builds a container running egalaxyd
+# make sure you have the "podman" packer plugin installed, ie: `packer plugins install github.com/Polpetta/podman`
+
+source "podman" "egalaxyd" {
+  image = "elixir:1.13.4-otp-25-alpine"
+  commit = true
+}
+
+build {
+  sources = ["source.podman.egalaxyd"]
+}