diff --git a/Config/F-DroidRepo/Dockerfile b/Config/F-DroidRepo/Dockerfile
index d373d40..e61a85c 100644
--- a/Config/F-DroidRepo/Dockerfile
+++ b/Config/F-DroidRepo/Dockerfile
@@ -202,6 +202,10 @@ RUN [ ! -z "$REPO_ICON" ] && \
 
 RUN fdroid update -c
 
+# Install Keystore #
+
+COPY files/keystore.p12 "$FDROID"/keystore.p12
+
 # Publish Repo Contents to Web Root #
 
 RUN cp -rv "$FDROID" "$WEBROOT/"
diff --git a/Config/F-DroidRepo/files/keystore.p12 b/Config/F-DroidRepo/files/keystore.p12
new file mode 100644
index 0000000..33bb8b4
Binary files /dev/null and b/Config/F-DroidRepo/files/keystore.p12 differ
diff --git a/Config/F-DroidRepo/prep.sh b/Config/F-DroidRepo/prep.sh
index 58e520c..82fd13b 100755
--- a/Config/F-DroidRepo/prep.sh
+++ b/Config/F-DroidRepo/prep.sh
@@ -13,5 +13,21 @@ source $DIR/.env
 # Create folders.
 mkdir -pv $FDROID_DATA
 
+if [[ ! -f files/leystore.p12 ]]; then
+	echo "ERROR: Keystore not detected. Please create it using 'keytool', like this:"
+	cat <<- EOF
+
+keytool -genkeypair -v \
+  -storetype PKCS12 \
+  -keystore keystore.p12 \
+  -alias fdroid \
+  -keyalg RSA -keysize 4096 \
+  -validity 10000 \
+  -dname "CN=TEST, OU=F-Droid"
+
+	EOF
+	exit 1
+fi
+
 # Finish successfully.
 exit 0