diff --git a/docker/Dockerfile.j2 b/docker/Dockerfile.j2
index 03322d6d..f152b9de 100644
--- a/docker/Dockerfile.j2
+++ b/docker/Dockerfile.j2
@@ -1,3 +1,6 @@
+{{ "# This file was generated using a Jinja2 template." }}
+{{ "# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's." }}
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
diff --git a/docker/aarch64/mysql/Dockerfile b/docker/aarch64/mysql/Dockerfile
index e7060aa5..e1408b7b 100644
--- a/docker/aarch64/mysql/Dockerfile
+++ b/docker/aarch64/mysql/Dockerfile
@@ -1,3 +1,6 @@
+# This file was generated using a Jinja2 template.
+# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's.
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
diff --git a/docker/aarch64/sqlite/Dockerfile b/docker/aarch64/sqlite/Dockerfile
index c94fafa9..1cd1649e 100644
--- a/docker/aarch64/sqlite/Dockerfile
+++ b/docker/aarch64/sqlite/Dockerfile
@@ -1,3 +1,6 @@
+# This file was generated using a Jinja2 template.
+# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's.
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
diff --git a/docker/amd64/mysql/Dockerfile b/docker/amd64/mysql/Dockerfile
index 4bd7c4a9..708c8ebc 100644
--- a/docker/amd64/mysql/Dockerfile
+++ b/docker/amd64/mysql/Dockerfile
@@ -1,3 +1,6 @@
+# This file was generated using a Jinja2 template.
+# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's.
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
diff --git a/docker/amd64/mysql/Dockerfile.alpine b/docker/amd64/mysql/Dockerfile.alpine
index b09b422a..98f0dcab 100644
--- a/docker/amd64/mysql/Dockerfile.alpine
+++ b/docker/amd64/mysql/Dockerfile.alpine
@@ -1,3 +1,6 @@
+# This file was generated using a Jinja2 template.
+# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's.
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
diff --git a/docker/amd64/postgresql/Dockerfile b/docker/amd64/postgresql/Dockerfile
index 5d781ab9..d7132e8b 100644
--- a/docker/amd64/postgresql/Dockerfile
+++ b/docker/amd64/postgresql/Dockerfile
@@ -1,3 +1,6 @@
+# This file was generated using a Jinja2 template.
+# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's.
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
diff --git a/docker/amd64/postgresql/Dockerfile.alpine b/docker/amd64/postgresql/Dockerfile.alpine
index 0a298baa..860240dd 100644
--- a/docker/amd64/postgresql/Dockerfile.alpine
+++ b/docker/amd64/postgresql/Dockerfile.alpine
@@ -1,3 +1,6 @@
+# This file was generated using a Jinja2 template.
+# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's.
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
diff --git a/docker/amd64/sqlite/Dockerfile b/docker/amd64/sqlite/Dockerfile
index 047196c1..23230ddb 100644
--- a/docker/amd64/sqlite/Dockerfile
+++ b/docker/amd64/sqlite/Dockerfile
@@ -1,3 +1,6 @@
+# This file was generated using a Jinja2 template.
+# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's.
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
diff --git a/docker/amd64/sqlite/Dockerfile.alpine b/docker/amd64/sqlite/Dockerfile.alpine
index 269a3dc4..d201a3ba 100644
--- a/docker/amd64/sqlite/Dockerfile.alpine
+++ b/docker/amd64/sqlite/Dockerfile.alpine
@@ -1,3 +1,6 @@
+# This file was generated using a Jinja2 template.
+# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's.
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
diff --git a/docker/armv6/mysql/Dockerfile b/docker/armv6/mysql/Dockerfile
index a97aafe0..ff5689b8 100644
--- a/docker/armv6/mysql/Dockerfile
+++ b/docker/armv6/mysql/Dockerfile
@@ -1,3 +1,6 @@
+# This file was generated using a Jinja2 template.
+# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's.
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
diff --git a/docker/armv6/sqlite/Dockerfile b/docker/armv6/sqlite/Dockerfile
index b93f6765..b9bc438d 100644
--- a/docker/armv6/sqlite/Dockerfile
+++ b/docker/armv6/sqlite/Dockerfile
@@ -1,3 +1,6 @@
+# This file was generated using a Jinja2 template.
+# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's.
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
diff --git a/docker/armv7/mysql/Dockerfile b/docker/armv7/mysql/Dockerfile
index 77430ca3..b5cad1d4 100644
--- a/docker/armv7/mysql/Dockerfile
+++ b/docker/armv7/mysql/Dockerfile
@@ -1,3 +1,6 @@
+# This file was generated using a Jinja2 template.
+# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's.
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
diff --git a/docker/armv7/sqlite/Dockerfile b/docker/armv7/sqlite/Dockerfile
index 4cd38412..77c82efe 100644
--- a/docker/armv7/sqlite/Dockerfile
+++ b/docker/armv7/sqlite/Dockerfile
@@ -1,3 +1,6 @@
+# This file was generated using a Jinja2 template.
+# Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfile's.
+
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/