feat: generate Dockerfiles for Express and FastAPI apps

Part of #42

Author: php-coder

README.md

@@ -47,10 +47,10 @@ Generates the endpoints (or a whole app) from a mapping (SQL query -> URL)
 1. Generate code   
    | Language   | Command for code generation | Example of generated files | Libraries |
    | -----------| ----------------------------| ---------------------------| --------- |
-   | JavaScript | `npx query2app --lang js`   | [`app.js`](examples/js/express/mysql/app.js)<br/>[`routes.js`](examples/js/express/mysql/routes.js)<br/>[`package.json`](examples/js/express/mysql/package.json) | Web: [`express`](https://www.npmjs.com/package/express)<br>Database: [`mysql`](https://www.npmjs.com/package/mysql) |
-   | TypeScript | `npx query2app --lang ts`   | [`app.ts`](examples/ts/express/mysql/app.ts)<br/>[`routes.ts`](examples/ts/express/mysql/routes.ts)<br/>[`package.json`](examples/ts/express/mysql/package.json)<br/>[`tsconfig.json`](examples/ts/express/mysql/tsconfig.json) | Web: [`express`](https://www.npmjs.com/package/express)<br>Database: [`mysql`](https://www.npmjs.com/package/mysql) |
+   | JavaScript | `npx query2app --lang js`   | [`app.js`](examples/js/express/mysql/app.js)<br/>[`routes.js`](examples/js/express/mysql/routes.js)<br/>[`package.json`](examples/js/express/mysql/package.json)<br/>[`Dockerfile`](examples/js/express/mysql/Dockerfile) | Web: [`express`](https://www.npmjs.com/package/express)<br>Database: [`mysql`](https://www.npmjs.com/package/mysql) |
+   | TypeScript | `npx query2app --lang ts`   | [`app.ts`](examples/ts/express/mysql/app.ts)<br/>[`routes.ts`](examples/ts/express/mysql/routes.ts)<br/>[`package.json`](examples/ts/express/mysql/package.json)<br/>[`tsconfig.json`](examples/ts/express/mysql/tsconfig.json)<br/>[`Dockerfile`](examples/ts/express/mysql/Dockerfile) | Web: [`express`](https://www.npmjs.com/package/express)<br>Database: [`mysql`](https://www.npmjs.com/package/mysql) |
    | Golang     | `npx query2app --lang go`   | [`app.go`](examples/go/chi/mysql/app.go)<br/>[`routes.go`](examples/go/chi/mysql/routes.go)<br/>[`go.mod`](examples/go/chi/mysql/go.mod) | Web: [`go-chi/chi`](https://github.com/go-chi/chi)<br/>Database: [`go-sql-driver/mysql`](https://github.com/go-sql-driver/mysql), [`jmoiron/sqlx`](https://github.com/jmoiron/sqlx) |
-   | Python     | `npx query2app --lang python` | [`app.py`](examples/python/fastapi/postgres/app.py)<br/>[`db.py`](examples/python/fastapi/postgres/db.py)<br/>[`routes.py`](examples/python/fastapi/postgres/routes.py)<br/>[`requirements.txt`](examples/python/fastapi/postgres/requirements.txt) | Web: [FastAPI](https://github.com/tiangolo/fastapi), [Uvicorn](https://www.uvicorn.org)<br/>Database: [psycopg2](https://pypi.org/project/psycopg2/) |
+   | Python     | `npx query2app --lang python` | [`app.py`](examples/python/fastapi/postgres/app.py)<br/>[`db.py`](examples/python/fastapi/postgres/db.py)<br/>[`routes.py`](examples/python/fastapi/postgres/routes.py)<br/>[`requirements.txt`](examples/python/fastapi/postgres/requirements.txt)<br/>[`Dockerfile`](examples/python/fastapi/postgres/Dockerfile) | Web: [FastAPI](https://github.com/tiangolo/fastapi), [Uvicorn](https://www.uvicorn.org)<br/>Database: [psycopg2](https://pypi.org/project/psycopg2/) |
 
 1. Run the application
    | Language   | Commands to run the application |

examples/js/express/mysql/Dockerfile

@@ -0,0 +1,8 @@
+FROM node:18-bookworm
+WORKDIR /opt/app
+COPY package.json ./
+ENV NPM_CONFIG_UPDATE_NOTIFIER=false
+RUN npm install --no-audit --no-fund
+COPY *.js ./
+USER node
+CMD [ "npm", "start" ]

examples/python/fastapi/postgres/Dockerfile

@@ -0,0 +1,6 @@
+FROM python:3.7-bookworm
+WORKDIR /opt/app
+COPY requirements.txt ./
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
+COPY *.py ./
+CMD [ "uvicorn", "app:app", "--host", "0.0.0.0" ]

examples/ts/express/mysql/Dockerfile

@@ -0,0 +1,9 @@
+FROM node:18-bookworm
+WORKDIR /opt/app
+COPY package.json ./
+ENV NPM_CONFIG_UPDATE_NOTIFIER=false
+RUN npm install --no-audit --no-fund
+COPY tsconfig.json *.ts ./
+RUN npm run build
+USER node
+CMD [ "npm", "start" ]

src/cli.js

@@ -321,6 +321,18 @@ const createDependenciesDescriptor = async (destDir, { lang }) => {
     return fsPromises.writeFile(resultFile, minimalPackageJson)
 }
 
+const createDockerfile = async (destDir, lang) => {
+    if (lang == 'go') {
+        return
+    }
+    const fileName = 'Dockerfile'
+    console.log('Generate', fileName)
+
+    const resultFile = path.join(destDir, fileName)
+
+    return fsPromises.copyFile(`${__dirname}/templates/${fileName}.${lang}`, resultFile)
+}
+
 const createTypeScriptConfig = async (destDir, lang) => {
     if (lang !== 'ts') {
         return
@@ -361,6 +373,7 @@ const main = async (argv) => {
     await createEndpoints(destDir, argv, config)
     await createDependenciesDescriptor(destDir, argv)
     await createTypeScriptConfig(destDir, argv.lang)
+    await createDockerfile(destDir, lang)
 
     console.info('The application has been generated!')
     console.info(generator.usageExampleAsText())

src/templates/Dockerfile.js

@@ -0,0 +1,8 @@
+FROM node:18-bookworm
+WORKDIR /opt/app
+COPY package.json ./
+ENV NPM_CONFIG_UPDATE_NOTIFIER=false
+RUN npm install --no-audit --no-fund
+COPY *.js ./
+USER node
+CMD [ "npm", "start" ]

src/templates/Dockerfile.py

@@ -0,0 +1,6 @@
+FROM python:3.7-bookworm
+WORKDIR /opt/app
+COPY requirements.txt ./
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
+COPY *.py ./
+CMD [ "uvicorn", "app:app", "--host", "0.0.0.0" ]

src/templates/Dockerfile.ts

@@ -0,0 +1,9 @@
+FROM node:18-bookworm
+WORKDIR /opt/app
+COPY package.json ./
+ENV NPM_CONFIG_UPDATE_NOTIFIER=false
+RUN npm install --no-audit --no-fund
+COPY tsconfig.json *.ts ./
+RUN npm run build
+USER node
+CMD [ "npm", "start" ]