test image build caching

.woodpecker/build-container.yml

@@ -12,6 +12,8 @@ steps:
       containerfile: Containerfile
       output: type=oci,dest=oci/${CI_REPO_NAME},tar=false
       repo: thegeeklab/${CI_REPO_NAME}
+      cache_to:
+        - 'type=local\\,src=oci/cache/${CI_REPO_NAME}'
 
   - name: security-scan
     image: ghcr.io/aquasecurity/trivy
@@ -38,7 +40,7 @@ steps:
       username:
         from_secret: docker_username
       cache_from:
-        - 'type=local\\,src=oci/${CI_REPO_NAME}'
+        - 'type=local\\,src=oci/cache/${CI_REPO_NAME}'
     when:
       - event: [tag]
       - event: [push, manual]

Containerfile

@@ -38,7 +38,7 @@ esac
 
 RUN rustup set profile minimal && \
     rustup target add $(cat rust_target) && \
-    VW_VERSION="${VAULTWARDEN_VERSION##v}" cargo build -j 8 --features "$DB" --target $(cat rust_target) --release
+    VW_VERSION="${VAULTWARDEN_VERSION##v}" cargo build -j 4 --features "$DB" --target $(cat rust_target) --release
 
 RUN ldd target/$(cat rust_target)/release/vaultwarden && \
     target/$(cat rust_target)/release/vaultwarden --help && \