diff --git a/Dockerfile b/Dockerfile
index a5434d4f..9bd97880 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,8 +5,12 @@
 
 FROM golang:1.18.1 as build-env
 
+# TODO Do not commit. Copy the locally modified source code of fosite.
+COPY fosite /Users/ryan/workspace/fosite
+
 WORKDIR /work
-COPY . .
+# TODO Do not commit. Copy the local pinniped source code as usual, but assume that the build context is one directory up.
+COPY pinniped .
 ARG GOPROXY
 
 # Build the executable binary (CGO_ENABLED=0 means static linking)
diff --git a/go.mod b/go.mod
index 251b43e2..0a31c90c 100644
--- a/go.mod
+++ b/go.mod
@@ -34,6 +34,9 @@ replace (
 	go.opentelemetry.io/otel/sdk/metric => go.opentelemetry.io/otel/sdk/metric v0.20.0
 	go.opentelemetry.io/otel/trace => go.opentelemetry.io/otel/trace v0.20.0
 	go.opentelemetry.io/proto/otlp => go.opentelemetry.io/proto/otlp v0.7.0
+
+	// TODO Do not commit. Temporary "replace" to use local bugfixed source code.
+	github.com/ory/fosite => /Users/ryan/workspace/fosite
 )
 
 require (
diff --git a/hack/prepare-for-integration-tests.sh b/hack/prepare-for-integration-tests.sh
index 35a9800f..7bb6ff6e 100755
--- a/hack/prepare-for-integration-tests.sh
+++ b/hack/prepare-for-integration-tests.sh
@@ -236,7 +236,8 @@ if [[ "$do_build" == "yes" ]]; then
   else
     log_note "Docker building the app..."
     # DOCKER_BUILDKIT=1 is optional on MacOS but required on linux.
-    DOCKER_BUILDKIT=1 docker build . --tag "$registry_repo_tag"
+    # TODO Do not commit. Temporarily use the parent directory as the build context so we can copy the local fosite source into the build.
+    DOCKER_BUILDKIT=1 docker build -f Dockerfile --tag "$registry_repo_tag" ..
   fi
 fi