Add a persistent volume check.

This will add a persistent volume check to make sure when running
containers someone is using a volume for persistent storage.

This check can be bypassed if someone configures
`I_REALLY_WANT_VOLATILE_STORAGE=true` as an environment variable.

This should prevent issues like #2493 .

docker/Dockerfile.j2

@@ -238,6 +238,12 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+# This file should disappear if a volume is mounted on-top of this using a docker volume.
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/amd64/Dockerfile

@@ -112,6 +112,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/amd64/Dockerfile.alpine

@@ -104,6 +104,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/amd64/Dockerfile.buildx

@@ -112,6 +112,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/amd64/Dockerfile.buildx.alpine

@@ -104,6 +104,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/arm64/Dockerfile

@@ -136,6 +136,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/arm64/Dockerfile.alpine

@@ -108,6 +108,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/arm64/Dockerfile.buildx

@@ -136,6 +136,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/arm64/Dockerfile.buildx.alpine

@@ -108,6 +108,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/armv6/Dockerfile

@@ -141,6 +141,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/armv6/Dockerfile.alpine

@@ -110,6 +110,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/armv6/Dockerfile.buildx

@@ -141,6 +141,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/armv6/Dockerfile.buildx.alpine

@@ -110,6 +110,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/armv7/Dockerfile

@@ -136,6 +136,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/armv7/Dockerfile.alpine

@@ -108,6 +108,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/armv7/Dockerfile.buildx

@@ -136,6 +136,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

docker/armv7/Dockerfile.buildx.alpine

@@ -108,6 +108,11 @@ VOLUME /data
 EXPOSE 80
 EXPOSE 3012
 
+# Create a special empty file which we check within the application.
+# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
+# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
+RUN touch /data/vaultwarden_docker_persistent_volume_check
+
 # Copies the files from the context (Rocket.toml file and web-vault)
 # and the binary from the "build" stage to the current stage
 WORKDIR /

src/main.rs

@@ -276,6 +276,20 @@ fn check_data_folder() {
         }
         exit(1);
     }
+
+    let persistent_volume_check_file = format!("{data_folder}/vaultwarden_docker_persistent_volume_check");
+    let check_file = Path::new(&persistent_volume_check_file);
+    if check_file.exists() && std::env::var("I_REALLY_WANT_VOLATILE_STORAGE").is_err() {
+        error!(
+            "No persistent volume!\n\
+            ########################################################################################\n\
+            # It looks like you did not configure a persistent volume!                             #\n\
+            # This will cause permanent data loss when stopping the container!                     #\n\
+            # If you really want to use volatile storage set `I_REALLY_WANT_VOLATILE_STORAGE=true` #\n\
+            ########################################################################################\n"
+        );
+        exit(1);
+    }
 }
 
 fn check_rsa_keys() -> Result<(), crate::error::Error> {