From 1ad2dd891cfd084194b9511a5f5412f9cbffd0b3 Mon Sep 17 00:00:00 2001
From: Micah Lee <micah@micahflee.com>
Date: Wed, 24 Nov 2021 13:06:37 -0800
Subject: [PATCH] Skip the save step if the image is already cached

---
 .circleci/config.yml | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index c3a6d71..c78bf01 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -85,10 +85,14 @@ jobs:
       - run:
           name: Save Dangerzone image and image-id.txt to cache
           command: |
-            mkdir -p /caches
-            docker save -o /caches/dangerzone-converter.tar dangerzone.rocks/dangerzone
-            gzip /caches/dangerzone-converter.tar
-            docker image ls dangerzone.rocks/dangerzone | grep "dangerzone.rocks/dangerzone" | tr -s ' ' | cut -d' ' -f3 > /caches/image-id.txt
+            if [ -f "/caches/dangerzone-converter.tar.gz" ]; then
+              echo "Already cached, skipping"
+            else
+              mkdir -p /caches
+              docker save -o /caches/dangerzone-converter.tar dangerzone.rocks/dangerzone
+              gzip -f /caches/dangerzone-converter.tar
+              docker image ls dangerzone.rocks/dangerzone | grep "dangerzone.rocks/dangerzone" | tr -s ' ' | cut -d' ' -f3 > /caches/image-id.txt
+            fi
       - save_cache:
           key: v1-{{ checksum "dangerzone-converter/Dockerfile" }}-{{ checksum "dangerzone-converter/dangerzone.py" }}-{{ checksum "dangerzone-converter/document-to-pixels" }}-{{ checksum "dangerzone-converter/pixels-to-pdf" }}
           paths: