Changed config YAML and dockerfile for backend app

Author: adityasinghal26

backstage-app/backstage101/app-config.yaml

@@ -12,7 +12,7 @@ backend:
   # auth:
   #   keys:
   #     - secret: ${BACKEND_SECRET}
-  baseUrl: http://localhost:7007
+  baseUrl: http://localhost:80
   listen:
     port: 7007
     # Uncomment the following host directive to bind to specific interfaces
@@ -28,16 +28,20 @@ backend:
   # This is for local development only, it is not recommended to use this in production
   # The production database configuration is stored in app-config.production.yaml
   database:
-    client: better-sqlite3
-    connection: ':memory:'
-  # workingDirectory: /tmp # Use this to configure a working directory for the scaffolder, defaults to the OS temp-dir
+    client: pg
+    connection:
+      host: postgres
+      port: 5432
+      user: backstage
+      password: hunter2
+        # workingDirectory: /tmp # Use this to configure a working directory for the scaffolder, defaults to the OS temp-dir
 
 integrations:
   github:
     - host: github.com
       # This is a Personal Access Token or PAT from GitHub. You can find out how to generate this token, and more information
       # about setting up the GitHub integration here: https://backstage.io/docs/getting-started/configuration#setting-up-a-github-integration
-      token: ${GITHUB_TOKEN}
+      token: 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
     ### Example for how to add your GitHub Enterprise instance using the API:
     # - host: ghe.example.net
     #   apiBaseUrl: https://ghe.example.net/api/v3
@@ -99,4 +103,4 @@ catalog:
     # - type: url
     #   target: https://github.com/backstage/backstage/blob/master/packages/catalog-model/examples/acme-corp.yaml
     #   rules:
-    #     - allow: [User, Group]
+    #     - allow: [User, Group]

backstage-app/backstage101/packages/backend/Dockerfile

@@ -9,7 +9,7 @@
 #
 # Once the commands have been run, you can build the image using `yarn build-image`
 
-FROM node:16-bullseye-slim
+FROM node:18.12.0
 
 # Install sqlite3 dependencies. You can skip this if you don't use sqlite3 in the image,
 # in which case you should also move better-sqlite3 to "devDependencies" in package.json.
@@ -41,6 +41,7 @@ RUN --mount=type=cache,target=/home/node/.cache/yarn,sharing=locked,uid=1000,gid
 
 # Then copy the rest of the backend bundle, along with any other files we might want.
 COPY --chown=node:node packages/backend/dist/bundle.tar.gz app-config*.yaml ./
+COPY --chown=node:node examples/ /examples/
 RUN tar xzf bundle.tar.gz && rm bundle.tar.gz
 
-CMD ["node", "packages/backend", "--config", "app-config.yaml", "--config", "app-config.production.yaml"]
+CMD ["node", "packages/backend", "--config", "app-config.yaml"]