Diesel doesnt run migrations: relation does not exist - postgresql

Question

Im develop my first project with rust+diesel and I have a problem: diesel doesnt run migrations, caused by error "relation does not exist", although relations exist.
My code:
main.rs:
pub fn establish_connection() -> PgConnection {
dotenv().ok();
let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
PgConnection::establish(&database_url)
.unwrap_or_else(|_| panic!("Error connecting to {}", database_url))
}
embed_migrations!("./migrations");
#[actix_rt::main]
async fn main() -> std::io::Result<()> {
let connect = database::establish_connection();
match embedded_migrations::run_with_output(&connect, &mut std::io::stdout()) {
Ok(()) => println!("migrations success"),
Err(e) => panic!("migrations error: {}", e)
}
}
Dockerfile:
FROM rust:1.61 as builder
WORKDIR /build/
COPY ./Cargo.toml .
COPY ./Cargo.lock .
COPY ./src ./src
COPY ./migrations ./migrations
RUN cargo build --release
FROM ubuntu:22.04 AS run
EXPOSE 8080
WORKDIR /run/
COPY --from=builder /build/target/release/to_do .
COPY ./dist ./dist
COPY ./docker-entrypoint.sh .
RUN apt-get update -y
RUN apt-get install -y libpq-dev
# docker-entrypoint.sh - wait 5432 port aviable & run to_do app
CMD ["sh", "docker-entrypoint.sh"]
docker-compose.yml:
version: "3.8"
services:
postgres_db:
image: postgres:14.3
container_name: to_do_postgres
restart: always
ports:
- ${POSTGRES_DB_PORT}:5432
environment:
- POSTGRES_USER=${POSTGRES_DB_USER}
- POSTGRES_DB=${POSTGRES_DB_NAME}
- POSTGRES_PASSWORD=${POSTGRES_DB_PASSWORD}
app:
image: to_do_build
container_name: to_do_app
restart: always
ports:
- ${APP_PORT}:8080
depends_on:
- postgres_db
environment:
- DATABASE_URL=postgres://${POSTGRES_DB_USER}:${POSTGRES_DB_PASSWORD}#postgres_db:${POSTGRES_DB_PORT}/${POSTGRES_DB_NAME}
- JWT_SECRET=${JWT_SECRET}
When im run a service by command:
docker-compose --env-file .conf up -d
.conf:
POSTGRES_DB_USER=to_do_user
POSTGRES_DB_NAME=to_do
POSTGRES_DB_PASSWORD=to_do_password
POSTGRES_DB_PORT=5432
JWT_SECRET=secret
APP_PORT=8080
Service runned, but when looking at the logs:
docker logs to_do_app
I get an error:
// DATABASE_URL = postgres://to_do_user:to_do_password#postgres_db:5432/to_do
Running migration 20220525065207
Executing migration script 20220525065207/up.sql
thread 'main' panicked at 'migrations error: Failed with: relation "to_do" does not exist', src/main.rs:28:19
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
Although if we connect to postgres via psql, we see that diesel has created its own system table:
docker exec -it to_do_postgres sh
$ psql -U to_do_user to_do
psql (14.3 (Debian 14.3-1.pgdg110+1))
Type "help" for help.
to_do=# \dt
List of relations
Schema | Name | Type | Owner
--------+----------------------------+-------+------------
public | __diesel_schema_migrations | table | to_do_user
(1 row)
I don't understand what I'm doing wrong.

Answer 1

I was just fighting with this myself and am also using actix-web like you. It finally worked for me though after I realized that I did not have COPY ./migrations ./migrations in my Dockerfile.
Looking at yours, I see you're not copying over diesel.toml:
COPY ./diesel.toml ./diesel.toml
Would that be it?