How do you start the prod server using Docker and SQLite?

[daniel-walz]

I have a question on how people setup their AdonisJS apps with Docker in production. When running locally I just set volumes that point to my local folders so that I can develop without rebuilding and restarting the image and container. And copy over my .env file to the container.

In production I'm a little confused on how to handle the .env file and then the DB migration step. I assume that I should setup a secret value in my workflow for the app key and send that to Docker using -e APP_KEY={{my_secret_ap_key}}.

docker run -p 3333:3333 -e PORT=3333 -e HOST=0.0.0.0 -e APP_KEY={{secret_app_key}} -e NODE_ENV=production -e DB_CONNECTION=sqlite -t settings-service:latest

When I run the container, it seems like it starts and migration runs successfully, but the application spits out an error when I try to access the DB:

❯ migrated database/migrations/1611240510677_settings

Migrated in 73 ms

> [email protected] start /app
> node .

{"level":30,"time":1611568765505,"pid":31,"hostname":"7c724bf9d0da","name":"settings-service","msg":"started server on 0.0.0.0:3333"}
[Error: SQLITE_CANTOPEN: unable to open database file] {
  errno: 14,
  code: 'SQLITE_CANTOPEN'
}

Dockerfile

# base image for local development
FROM mhart/alpine-node:14

# SQLite3
RUN apk update
RUN apk add git sqlite python make g++ > /dev/null

# set working directory
WORKDIR /app

# add environment variables
ENV PATH /app/node_modules/.bin:$PATH
ENV SKIP_PREFLIGHT_CHECK=true

# copy application files
COPY . .

# create SQLite DB directory
RUN mkdir -p tmp

# install and cache app dependencies
RUN npm config set registry http://registry.npmjs.org/
RUN npm install --silent
RUN npm run build

RUN chmod +x start.sh

CMD ["/app/start.sh"]

start.sh

#!/bin/sh

node ace migration:run --force
npm run start

Note, that in this case I have already run the invoke command for Lucid and checked in everything it generates and sets up.
node ace invoke @adonisjs/lucid

This was the only way I got the migration to run in the container.
I have also verified in that the DB table is created when I exec into the container.

/app/tmp # sqlite3
SQLite version 3.30.1 2019-10-10 20:19:45
Enter ".help" for usage hints.
Connected to a transient in-memory database.
Use ".open FILENAME" to reopen on a persistent database.
sqlite> .open db.sqlite3
sqlite> .tables
adonis_schema  settings
sqlite> SELECT * FROM adonis_schema
   ...> ;
1|database/migrations/1611240510677_settings|1|2021-01-25 09:59:24

What am I missing?

[daniel-walz]

I think I found the answer, I was setting up the tmp folder for the SQLite DB in the working dir (/app) in the container, not in the build folder from where I start the application after I have done a production build.

The fix was to move the creation of the tmp folder, remove the line inte the Dockerfile and add it in the start script.

start.sh

#!/bin/sh

cd build
mkdir -p tmp
node ace migration:run --force
npm run start

[daniel-walz]

After som extra thoughts I have split the creation in two parts, so now I first build everything and then create a new container and copy the contents of the build folder to the new container and then run npm install there to get it more clean.

Dockerfile:

# base image for production
FROM mhart/alpine-node:14 as build

# SQLite3
RUN apk update
RUN apk add git > /dev/null

# set working directory
WORKDIR /app

# add environment variables
ENV PATH /app/node_modules/.bin:$PATH
ENV SKIP_PREFLIGHT_CHECK=true

# copy application files
COPY . .

# install and cache app development dependencies
RUN npm install --silent
RUN npm run build

# base image for production
FROM mhart/alpine-node:14

# SQLite3
RUN apk update
RUN apk add git sqlite python make g++ > /dev/null

# set working directory
WORKDIR /app

# copy application files
COPY --from=build /app/build /app
COPY --from=build /app/node_modules /app/node_modules
COPY ./scripts/start.sh /app

RUN mkdir tmp

# install and cache app production dependencies
RUN npm install [email protected]

# set startpoint for the application
RUN chmod +x start.sh
CMD ["/app/start.sh"]

start.sh:

#!/bin/sh

node ace migration:run --force
npm run start

[Nithur-M]

does this erase the db in every deployment? because you are creating the directory in every build right?

[deadcoder0904]

I came to the same conclusion albeit a different stack.

[Nithur-M]

Hi, can i make this work without litestream? what should I look out for?