diff --git a/README.md b/README.md
index b223d35..c7afc10 100644
--- a/README.md
+++ b/README.md
@@ -317,6 +317,7 @@ A collection of delicious docker recipes.
   - [x] cp-kafka-rest
   - [x] ksqldb-cli
   - [x] ksqldb-server
+- [x] schollz/croc
 - [x] streamsets/datacollector
 - [x] daskdev
   - [x] dask
diff --git a/croc/README.md b/croc/README.md
new file mode 100644
index 0000000..7cb75a4
--- /dev/null
+++ b/croc/README.md
@@ -0,0 +1,42 @@
+croc
+====
+
+[croc][1] is a tool that allows any two computers to simply and securely transfer
+files and folders.
+
+## Server
+
+```bash
+$ CROC_PASS=hackme croc relay
+[info]	2023/02/23 10:29:50 starting croc relay version v9.6.0-0e93f1e
+[info]	2023/02/23 10:29:50 starting TCP server on :9009
+[info]	2023/02/23 10:29:50 starting TCP server on :9010
+[info]	2023/02/23 10:29:50 starting TCP server on :9011
+[info]	2023/02/23 10:29:50 starting TCP server on :9012
+[info]	2023/02/23 10:29:50 starting TCP server on :9013
+```
+
+## Client A (sender)
+
+```bash
+$ export CROC_RELAY=1.2.3.4:9009
+$ export CROC_PASS=hackme
+
+$ seq 10 > test.txt
+
+$ croc send test.txt
+Sending 'test.txt' (21 B)
+Code is: 1234-what-the-hack
+```
+
+## Client B (receiver)
+
+```bash
+$ export CROC_RELAY=1.2.3.4:9009
+$ export CROC_PASS=hackme
+
+$ croc 1234-what-the-hack
+Accept 'test.txt' (21 B)? (Y/n)
+```
+
+[1]: https://github.com/schollz/croc
diff --git a/croc/docker-compose.yml b/croc/docker-compose.yml
new file mode 100644
index 0000000..88aa1ca
--- /dev/null
+++ b/croc/docker-compose.yml
@@ -0,0 +1,9 @@
+version: "3.8"
+services:
+  croc:
+    image: schollz/croc
+    ports:
+      - "9009-9013:9009-9013"
+    environment:
+      - CROC_PASS=hackme
+    restart: unless-stopped