diff --git a/Dockerfile b/Dockerfile
index 9382940..2320a7b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,7 +19,9 @@
 #___INFO__MARK_END_NEW__
 
 #FROM hpcgridware/clusterscheduler-latest-ubuntu2204:latest
-FROM hpcgridware/clusterscheduler-latest-ubuntu2204:V901_TAG
+#FROM hpcgridware/clusterscheduler-latest-ubuntu2204:V901_TAG
+#FROM hpcgridware/ocs-ubuntu2204:9.0.2
+FROM hpcgridware/ocs-ubuntu2204-nightly:20250203
 
 RUN mkdir -p /opt/helpers
 
@@ -27,10 +29,10 @@ COPY autoinstall.template /opt/helpers/
 COPY installer.sh /opt/helpers/
 COPY entrypoint.sh /entrypoint.sh
 
-ARG GOLANG_VERSION=1.23.1
+ARG GOLANG_VERSION=1.23.5
 
 RUN apt-get update && \
-    apt-get install -y curl wget git gcc make vim libhwloc-dev hwloc software-properties-common && \
+    apt-get install -y curl wget git gcc make vim libhwloc-dev hwloc software-properties-common man-db  && \
     add-apt-repository -y ppa:apptainer/ppa && \
     apt-get update && \
     apt-get install -y apptainer
diff --git a/Makefile b/Makefile
index 9459924..fe07999 100644
--- a/Makefile
+++ b/Makefile
@@ -27,7 +27,7 @@ CONTAINER_NAME = $(IMAGE_NAME)
 .PHONY: build
 build:
 	@echo "Building the Open Cluster Scheduler image..."
-	docker build -t $(IMAGE_NAME):$(IMAGE_TAG) .
+	docker build --platform=linux/amd64 -t $(IMAGE_NAME):$(IMAGE_TAG) .
 
 # Running apptainers in containers requires more permissions. You can drop
 # the --privileged flag and the --cap-add SYS_ADMIN flag if you don't need
@@ -43,7 +43,7 @@ run: build
 	@echo "Running the Open Cluster Scheduler container..."
 	@echo "For a new installation, you need to remove the ./installation subdirectory first."
 	mkdir -p ./installation
-	docker run -p 7070:7070 -p 9464:9464 --rm -it -h master --name $(CONTAINER_NAME) -v ./installation:/opt/cs-install -v ./:/root/go/src/github.com/hpc-gridware/go-clusterscheduler $(IMAGE_NAME):$(IMAGE_TAG) /bin/bash
+	docker run --platform=linux/amd64 -p 7070:7070 -p 9464:9464 --rm -it -h master --name $(CONTAINER_NAME) -v ./installation:/opt/cs-install -v ./:/root/go/src/github.com/hpc-gridware/go-clusterscheduler $(IMAGE_NAME):$(IMAGE_TAG) /bin/bash
 
 # Running apptainers in containers requires more permissions. You can drop
 # the --privileged flag and the --cap-add SYS_ADMIN flag if you don't need
diff --git a/examples/flexableaccounting/flexibleaccounting.go b/examples/flexableaccounting/flexibleaccounting.go
new file mode 100644
index 0000000..676e1fc
--- /dev/null
+++ b/examples/flexableaccounting/flexibleaccounting.go
@@ -0,0 +1,56 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/hpc-gridware/go-clusterscheduler/pkg/accounting"
+	"golang.org/x/exp/rand"
+)
+
+// This is an example epilog which adds arbitrary accounting records for
+// jobs to the system. In order to use the example additional accounting records
+// for the "test" namespace - a namespace is just a subsection in the JSON
+// accounting file - (with usage values with the "tst prefix) needs to
+// be enabled:
+//
+// qconf -mconf
+// ..
+// reporting_params ...  usage_patterns=test:tst*
+//
+// Compile this example (go build) and copy the binary to your cluster
+// scheduler installation directory.
+//
+// Then configure your queue epilog script with sgeadmin@/path/to/flexibleaccounting
+// Ensure that the binary is executable. The sgeadmin is the correct user
+// to use for this (check the owner of $SGE_ROOT).
+//
+// When configured correctly the following command should output the
+// accounting records:
+//
+// qacct -j <job_id>
+//
+// You should see the two tst_random* records in the qacct after your job
+// has finished.
+//
+// tst_random1                        351.000
+// tst_random2                        121.000
+func main() {
+	usageFilePath, err := accounting.GetUsageFilePath()
+	if err != nil {
+		fmt.Printf("Failed to get usage file path: %v\n", err)
+		return
+	}
+	err = accounting.AppendToAccounting(usageFilePath, []accounting.Record{
+		{
+			AccountingKey:   "tst_random1",
+			AccountingValue: rand.Intn(1000),
+		},
+		{
+			AccountingKey:   "tst_random2",
+			AccountingValue: rand.Intn(1000),
+		},
+	})
+	if err != nil {
+		fmt.Printf("Failed to append to accounting: %v\n", err)
+	}
+}
diff --git a/go.mod b/go.mod
index 55ad560..36e9147 100644
--- a/go.mod
+++ b/go.mod
@@ -15,6 +15,7 @@ require (
 	go.opentelemetry.io/otel/sdk v1.33.0
 	go.opentelemetry.io/otel/sdk/log v0.9.0
 	go.opentelemetry.io/otel/sdk/metric v1.33.0
+	golang.org/x/exp v0.0.0-20250128182459-e0ece0dbea4c
 )
 
 require (
@@ -27,9 +28,9 @@ require (
 	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
 	go.opentelemetry.io/otel/metric v1.33.0 // indirect
 	go.opentelemetry.io/otel/trace v1.33.0 // indirect
-	golang.org/x/net v0.30.0 // indirect
-	golang.org/x/sys v0.28.0 // indirect
-	golang.org/x/text v0.19.0 // indirect
-	golang.org/x/tools v0.26.0 // indirect
+	golang.org/x/net v0.34.0 // indirect
+	golang.org/x/sys v0.29.0 // indirect
+	golang.org/x/text v0.21.0 // indirect
+	golang.org/x/tools v0.29.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/go.sum b/go.sum
index 3862a1a..8b73944 100644
--- a/go.sum
+++ b/go.sum
@@ -53,14 +53,16 @@ go.opentelemetry.io/otel/sdk/metric v1.33.0 h1:Gs5VK9/WUJhNXZgn8MR6ITatvAmKeIuCt
 go.opentelemetry.io/otel/sdk/metric v1.33.0/go.mod h1:dL5ykHZmm1B1nVRk9dDjChwDmt81MjVp3gLkQRwKf/Q=
 go.opentelemetry.io/otel/trace v1.33.0 h1:cCJuF7LRjUFso9LPnEAHJDB2pqzp+hbO8eu1qqW2d/s=
 go.opentelemetry.io/otel/trace v1.33.0/go.mod h1:uIcdVUZMpTAmz0tI1z04GoVSezK37CbGV4fr1f2nBck=
-golang.org/x/net v0.30.0 h1:AcW1SDZMkb8IpzCdQUaIq2sP4sZ4zw+55h6ynffypl4=
-golang.org/x/net v0.30.0/go.mod h1:2wGyMJ5iFasEhkwi13ChkO/t1ECNC4X4eBKkVFyYFlU=
-golang.org/x/sys v0.28.0 h1:Fksou7UEQUWlKvIdsqzJmUmCX3cZuD2+P3XyyzwMhlA=
-golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
-golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
-golang.org/x/tools v0.26.0 h1:v/60pFQmzmT9ExmjDv2gGIfi3OqfKoEP6I5+umXlbnQ=
-golang.org/x/tools v0.26.0/go.mod h1:TPVVj70c7JJ3WCazhD8OdXcZg/og+b9+tH/KxylGwH0=
+golang.org/x/exp v0.0.0-20250128182459-e0ece0dbea4c h1:KL/ZBHXgKGVmuZBZ01Lt57yE5ws8ZPSkkihmEyq7FXc=
+golang.org/x/exp v0.0.0-20250128182459-e0ece0dbea4c/go.mod h1:tujkw807nyEEAamNbDrEGzRav+ilXA7PCRAd6xsmwiU=
+golang.org/x/net v0.34.0 h1:Mb7Mrk043xzHgnRM88suvJFwzVrRfHEHJEl5/71CKw0=
+golang.org/x/net v0.34.0/go.mod h1:di0qlW3YNM5oh6GqDGQr92MyTozJPmybPK4Ev/Gm31k=
+golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
+golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
+golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
+golang.org/x/tools v0.29.0 h1:Xx0h3TtM9rzQpQuR4dKLrdglAmCEN5Oi+P74JdhdzXE=
+golang.org/x/tools v0.29.0/go.mod h1:KMQVMRsVxU6nHCFXrBPhDB8XncLNLM0lIy/F14RP588=
 google.golang.org/protobuf v1.35.1 h1:m3LfL6/Ca+fqnjnlqQXNpFPABW1UD7mjh8KO2mKFytA=
 google.golang.org/protobuf v1.35.1/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
diff --git a/installer.sh b/installer.sh
index e40ea82..2df6ec6 100755
--- a/installer.sh
+++ b/installer.sh
@@ -38,7 +38,11 @@ fi
 echo "Open Cluster Scheduler is not yet installed in ${MOUNT_DIR}. Starting installation."
 
 # Copy unpacked Open Cluster Scheduler package to ${MOUNT_DIR}
-cp -r /opt/cs/* ${MOUNT_DIR}
+if [ -d /opt/ocs ]; then
+  cp -r /opt/ocs/* "${MOUNT_DIR}"
+else
+  cp -r /opt/cs/* "${MOUNT_DIR}"
+fi
 
 cd ${MOUNT_DIR}
 
diff --git a/pkg/accounting/accounting.go b/pkg/accounting/accounting.go
new file mode 100644
index 0000000..8f0835b
--- /dev/null
+++ b/pkg/accounting/accounting.go
@@ -0,0 +1,65 @@
+/*___INFO__MARK_BEGIN__*/
+/*************************************************************************
+*  Copyright 2025 HPC-Gridware GmbH
+*
+*  Licensed under the Apache License, Version 2.0 (the "License");
+*  you may not use this file except in compliance with the License.
+*  You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+*  Unless required by applicable law or agreed to in writing, software
+*  distributed under the License is distributed on an "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*  See the License for the specific language governing permissions and
+*  limitations under the License.
+*
+************************************************************************/
+/*___INFO__MARK_END__*/
+
+package accounting
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+// Record is a key-value pair representing an accounting record.
+type Record struct {
+	AccountingKey   string
+	AccountingValue int
+}
+
+// AppendToAccounting appends accounting records to the usage file so
+// that it gets send to the execution daemon. Typically sgeadmin user
+// (Cluster Scheduler install user).
+// Hence you need to prefix your epilog script with sgeadmin@/path/to/epilog.
+func AppendToAccounting(usageFilePath string, records []Record) error {
+	f, err := os.OpenFile(usageFilePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	var nl string
+
+	for _, record := range records {
+		nl += fmt.Sprintf("%s=%d\n",
+			record.AccountingKey,
+			record.AccountingValue)
+	}
+
+	_, err = f.WriteString(nl)
+	return err
+}
+
+// GetUsageFilePath returns the path to the job usage file in the
+// job spool directory.
+func GetUsageFilePath() (string, error) {
+	jobSpoolDir := os.Getenv("SGE_JOB_SPOOL_DIR")
+	if jobSpoolDir == "" {
+		return "", fmt.Errorf("SGE_JOB_SPOOL_DIR is not set")
+	}
+	return filepath.Join(jobSpoolDir, "usage"), nil
+}
diff --git a/pkg/accounting/accounting_suite_test.go b/pkg/accounting/accounting_suite_test.go
new file mode 100644
index 0000000..4ca4b12
--- /dev/null
+++ b/pkg/accounting/accounting_suite_test.go
@@ -0,0 +1,32 @@
+/*___INFO__MARK_BEGIN__*/
+/*************************************************************************
+*  Copyright 2025 HPC-Gridware GmbH
+*
+*  Licensed under the Apache License, Version 2.0 (the "License");
+*  you may not use this file except in compliance with the License.
+*  You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+*  Unless required by applicable law or agreed to in writing, software
+*  distributed under the License is distributed on an "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*  See the License for the specific language governing permissions and
+*  limitations under the License.
+*
+************************************************************************/
+/*___INFO__MARK_END__*/
+
+package accounting_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+func TestAccounting(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Accounting Suite")
+}
diff --git a/pkg/accounting/accounting_test.go b/pkg/accounting/accounting_test.go
new file mode 100644
index 0000000..9f54c6e
--- /dev/null
+++ b/pkg/accounting/accounting_test.go
@@ -0,0 +1,50 @@
+/*___INFO__MARK_BEGIN__*/
+/*************************************************************************
+*  Copyright 2025 HPC-Gridware GmbH
+*
+*  Licensed under the Apache License, Version 2.0 (the "License");
+*  you may not use this file except in compliance with the License.
+*  You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+*  Unless required by applicable law or agreed to in writing, software
+*  distributed under the License is distributed on an "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*  See the License for the specific language governing permissions and
+*  limitations under the License.
+*
+************************************************************************/
+/*___INFO__MARK_END__*/
+
+package accounting_test
+
+import (
+	"os"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"github.com/hpc-gridware/go-clusterscheduler/pkg/accounting"
+)
+
+var _ = Describe("Accounting", func() {
+
+	Context("GetUsageFilePath", func() {
+
+		It("should return the usage file path", func() {
+			os.Unsetenv("SGE_JOB_SPOOL_DIR")
+			usageFilePath, err := accounting.GetUsageFilePath()
+			Expect(err).To(HaveOccurred())
+			Expect(usageFilePath).To(Equal(""))
+		})
+
+		It("should return the usage file path", func() {
+			os.Setenv("SGE_JOB_SPOOL_DIR", "/var/spool/gridengine/job_spool")
+			usageFilePath, err := accounting.GetUsageFilePath()
+			Expect(err).NotTo(HaveOccurred())
+			Expect(usageFilePath).To(Equal("/var/spool/gridengine/job_spool/usage"))
+		})
+
+	})
+})