ci: optimize speed by avoiding a busted cache after prepare step

.releaserc.yml

@@ -11,8 +11,6 @@ plugins:
     - npmPublish: false
   - - "@semantic-release/exec"
     - prepareCmd: |
-        hack/build-docker-image.sh prepare ${nextRelease.version}
-
         # Update version in Helm Chart
         CHART_FILE=charts/listory/Chart.yaml
 
@@ -30,6 +28,9 @@ plugins:
           -e "s/apricote\/listory:.*/apricote\/listory:${nextRelease.version}/g" \
           docker-compose.prod.yml
 
+        # Build docker image after updating all versions, to make sure that we
+        # don't bust the cache between prepare & publish
+        hack/build-docker-image.sh prepare ${nextRelease.version}
       publishCmd: |
         hack/build-docker-image.sh publish ${nextRelease.version}
 

hack/build-docker-image.sh

@@ -11,17 +11,14 @@ REPO="apricote/listory"
 PLATFORMS="--platform=linux/amd64,linux/arm64"
 TAGS="--tag ${REPO}:${VERSION} --tag ${REPO}:latest"
 ARGS="--build-arg VERSION=${VERSION} --build-arg GIT_COMMIT=`git rev-parse HEAD`"
+CACHE="--cache-from=type=registry,ref=${REPO}:buildcache --cache-to=type=registry,ref=${REPO}:buildcache"
 
-CACHE=""
+
+# We "build" the image twice, once in "prepare" and then again in "publish" stage:
+# - Prepare makes sure that the image is buildable
+# - Publish utilizes the local cache from prepare stage and pushes the image
 PUSH=""
-
-# We "build" the image twice, once in "prepare" and then again in "publish" stage.
-# - Prepare makes sure that the image is buildable and utilizes the remote cache.
-# - Publish utilizes the local cache from prepare stage and pushes the image.
-if [ "$PREPARE_OR_PUBLISH" = "prepare" ]; then
-  CACHE="--cache-from=type=registry,ref=${REPO}:buildcache --cache-to=type=registry,ref=${REPO}:buildcache"
-else
-  # Uses local buildkit cache
+if [ "$PREPARE_OR_PUBLISH" = "publish" ]; then
   PUSH="--push"
 fi