From 75b7b693187d4c6b591230f03ebb4f4d366b4bb0 Mon Sep 17 00:00:00 2001
From: Andrew Hosgood <andrew.hosgood@nationalarchives.gov.uk>
Date: Mon, 8 Apr 2024 11:54:39 +0100
Subject: [PATCH] Use preview image locally and latest image in production

---
 Dockerfile         | 4 +++-
 docker-compose.yml | 5 ++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 86a3d54..4e50e31 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,6 @@
-FROM ghcr.io/nationalarchives/tna-python:latest
+ARG IMAGE_TAG=latest
+
+FROM ghcr.io/nationalarchives/tna-python:"$IMAGE_TAG"
 
 # Copy in the application code
 COPY --chown=app . .
diff --git a/docker-compose.yml b/docker-compose.yml
index cbb6f80..851f519 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -2,7 +2,10 @@ version: "3"
 
 services:
   app:
-    build: .
+    build:
+      context: .
+      args:
+        IMAGE_TAG: preview
     environment:
       - ENVIRONMENT=develop
       - SECRET_KEY=abc123