diff --git a/Dockerfile.debian b/Dockerfile.debian
new file mode 100644
index 0000000..1ef7b34
--- /dev/null
+++ b/Dockerfile.debian
@@ -0,0 +1,12 @@
+# Mostly intended for debugging full provisioning runs.
+from debian:bookworm
+
+run echo 'deb http://deb.debian.org/debian bookworm-backports main' > /etc/apt/sources.list.d/backports.list
+run apt update -y && apt install -y ca-certificates gnupg2 systemd
+run apt install -y -t bookworm-backports golang-1.20-go
+
+copy . /root/fup/
+workdir /root/fup
+run /usr/lib/go-1.20/bin/go install
+
+cmd ["/bin/systemd"]
diff --git a/Dockerfile.fedora b/Dockerfile.fedora
index ed9f42d..a05e8dd 100644
--- a/Dockerfile.fedora
+++ b/Dockerfile.fedora
@@ -1,7 +1,7 @@
 # Mostly intended for debugging full provisioning runs.
 from fedora:39
 
-run dnf update -y && dnf install -y gnupg2 golang systemd
+run dnf update -y && dnf install -y ca-certificates gnupg2 golang systemd
 
 copy . /root/fup/
 workdir /root/fup
diff --git a/Dockerfile.ubuntu b/Dockerfile.ubuntu
index 23f2ddd..03bbfa2 100644
--- a/Dockerfile.ubuntu
+++ b/Dockerfile.ubuntu
@@ -1,7 +1,7 @@
 # Mostly intended for debugging full provisioning runs.
 from ubuntu:mantic
 
-run apt update -y && apt install -y gnupg2 golang systemd
+run apt update -y && apt install -y ca-certificates gnupg2 golang systemd
 
 copy . /root/fup/
 workdir /root/fup
diff --git a/precheck/fact.go b/precheck/fact.go
index 5da870a..93cfce9 100644
--- a/precheck/fact.go
+++ b/precheck/fact.go
@@ -121,7 +121,7 @@ func isOs(osId string) (bool, error) {
 	return foundOsId == osId, nil
 }
 
-func isOsVersion(version int) (bool, error) {
+func isOsVersion(version float64) (bool, error) {
 	osVersion, err := GetOSVersion()
 	if err != nil {
 		return false, err
diff --git a/precheck/os.go b/precheck/os.go
index bfb0bcc..fc1f258 100644
--- a/precheck/os.go
+++ b/precheck/os.go
@@ -69,16 +69,16 @@ func GetOSId() (string, error) {
 	return getOSReleaseField(osIdField)
 }
 
-func GetOSVersion() (int, error) {
+func GetOSVersion() (float64, error) {
 	versionStr, err := getOSReleaseField(osVersionField)
 	if err != nil {
 		return 0, err
 	}
 
-	version, err := strconv.ParseInt(versionStr, 10, 64)
+	version, err := strconv.ParseFloat(versionStr, 64)
 	if err != nil {
 		return 0, err
 	}
 
-	return int(version), nil
+	return version, nil
 }