Use Docker volume to test release artifacts integration with the web process (#5)

* Use Docker volume to test release artifacts integration with the web process

* Fix integration test with tempdir storage

Author: mars

Cargo.lock

@@ -7,7 +7,7 @@ edition.workspace = true
 workspace = true
 
 [dependencies]
-libcnb = "0.22.0"
+libcnb = { git = "https://github.com/mars/libcnb.rs.git", branch = "docker-volume" }
 commons_ruby = { git = "https://github.com/heroku/buildpacks-ruby", branch = "main", package = "commons" }
 libherokubuildpack = { version = "=0.22.0", default-features = false, features = ["fs", "log"] }
 indoc = "2"
@@ -17,5 +17,7 @@ tokio = { version = "1.40.0", features = ["macros", "rt-multi-thread"] }
 toml = { version = "0.8", features = ["preserve_order"] }
 
 [dev-dependencies]
-libcnb-test = "=0.22.0"
+libcnb-test = { git = "https://github.com/mars/libcnb.rs.git", branch = "docker-volume" }
+tempfile = "3"
 test_support.workspace = true
+uuid = { version = "1.10.0", features = ["v4", "serde"] }

buildpacks/release-phase/Cargo.toml

@@ -17,7 +17,11 @@ use setup_release_phase::setup_release_phase;
 #[cfg(test)]
 use libcnb_test as _;
 #[cfg(test)]
+use tempfile as _;
+#[cfg(test)]
 use test_support as _;
+#[cfg(test)]
+use uuid as _;
 
 // Silence unused dependency warning for
 // dependencies used in bin/ executables

buildpacks/release-phase/src/main.rs

@@ -0,0 +1 @@
+web: /bin/bash -c "echo \"STATIC_ARTIFACTS_LOADED_FROM_KEY=$STATIC_ARTIFACTS_LOADED_FROM_KEY\" && cat static-artifacts/note.txt"

buildpacks/release-phase/tests/fixtures/project_uses_release_build_with_web_process/Procfile

@@ -0,0 +1,9 @@
+[_]
+schema-version = "0.2"
+
+[[io.buildpacks.group]]
+uri = "heroku/release-phase"
+
+[com.heroku.phase.release-build]
+command = "bash"
+args = ["-c", "echo 'Build in Release Phase Buildpack!'; mkdir -p /workspace/static-artifacts; echo 'Hello static world!' > /workspace/static-artifacts/note.txt"]