devdrops · August 12, 2025 11:54 · Dec 22, 2016 · Dec 22, 2016 · Dec 19, 2016
diff --git a/example.md b/example.md
@@ -9,3 +9,16 @@ docker exec -i mysql_container mysqldump -uroot -proot --databases database_name
 * This will generate a `dump.sql` file in your host machine. Awesome, eh?
 * Avoid using `--compact` on your dump. This will make MySQL check your constraints which will cause troubles when reading your file (damm you MySQL). And don't use `--force` to fix this scenario: recreate your dump without `--compact` ¯\_(ツ)_/¯
 * You can execute the same command for both Docker and Docker Compose scenarios :wink:
+* To import again your dump in a MySQL container, the best approach is to have another container with your dump files added during the build process. In my experience, the usage of making Docker read the dump from your host right to the guest caused troubles (errors like `socket.error: [Errno 32] Broken pipe` and the terrific `ValueError: file descriptor cannot be a negative integer (-1)` described [here](https://github.com/docker/compose/issues/3352)). So, in order to import again your dump:
+
+    * From Docker Compose:
+
+    ```bash
+    docker-compose exec mysql_service /bin/bash -c 'mysql -uroot -proot < /path/to/my/dump.sql'
+    ```
+
+    * From Docker:
+
+    ```bash
+    docker exec mysql_container /bin/bash -c 'mysql -uroot -proot < /path/to/my/dump.sql'
+    ```
diff --git a/example.md b/example.md
@@ -1,7 +1,11 @@
 # Mysqldump from Docker container
 
-Generates `dump.sql` from a single database, in your host machine:
-
 ```bash
-docker exec -i mysql_container mysqldump -uroot -proot database_name > dump.sql
+docker exec -i mysql_container mysqldump -uroot -proot --databases database_name --skip-comments > /path/to/my/dump.sql
 ```
+
+## OBS
+
+* This will generate a `dump.sql` file in your host machine. Awesome, eh?
+* Avoid using `--compact` on your dump. This will make MySQL check your constraints which will cause troubles when reading your file (damm you MySQL). And don't use `--force` to fix this scenario: recreate your dump without `--compact` ¯\_(ツ)_/¯
+* You can execute the same command for both Docker and Docker Compose scenarios :wink:
diff --git a/example.md b/example.md
@@ -0,0 +1,7 @@
+# Mysqldump from Docker container
+
+Generates `dump.sql` from a single database, in your host machine:
+
+```bash
+docker exec -i mysql_container mysqldump -uroot -proot database_name > dump.sql
+```