diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..cf350f1
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,4 @@
+# PostgreSQL init script must use LF as line endings
+# Run `git ls-files --eol` to view applied attributes
+configuration/os2iot-postgresql/initdb/*.sh text eol=lf
+configuration/postgres/initdb/*.sh          text eol=lf
diff --git a/.gitignore b/.gitignore
index ac48180..0d086e7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,8 @@
 .idea/
+.env
+ca.srl
 ca.crt
 ca.key
 server.crt
 server.key
-server.csr
\ No newline at end of file
+server.csr
diff --git a/Development.md b/Development.md
new file mode 100644
index 0000000..f2c4a55
--- /dev/null
+++ b/Development.md
@@ -0,0 +1,92 @@
+# Development
+
+> [!WARNING]
+> This document is still work in progress.
+
+Start backend and frontend in development mode (cf. [`docker-compose.development.yml`](docker-compose.development.yml)):
+
+``` shell
+task dev:start
+task setup:chirpstack
+```
+
+Nginx now exposes the frontend on <http://127.0.0.1:8888/> and the backend (API) on <http://127.0.0.1:8888/api/>, e.g.
+<http://127.0.0.1:8888/api/v1/docs>.
+
+> [!NOTE]
+> You may have to wait quite a while until everything is up and running. And you may have to reload in your browser a
+> couple of times …
+
+Check the status development services:
+
+``` shell
+task dev:status
+curl http://0.0.0.0:8888
+curl http://0.0.0.0:8888/api/v1/docs
+```
+
+## Frontend
+
+> [!WARNING]
+> Incomplete section ahead!
+
+Built with Angular.
+
+## Backend
+
+> [!WARNING]
+> Incomplete section ahead!
+
+Built with [Nest (NestJS)](https://docs.nestjs.com/).
+
+``` shell
+task dev:log SERVICE=backend
+```
+
+### Add new entity
+
+1. Create a new class in `src/entities`, e.g.
+
+   ``` node
+   // src/entities/contact-person.entity.ts
+   import { DbBaseEntity } from "./base.entity";
+
+   @Entity("contact_person")
+   export class ContactPerson extends DbBaseEntity {
+     // …
+   }
+   ```
+
+2. Add the entity to `TypeOrmModule.forFeature` in `src/modules/shared.module.ts`:
+
+   ``` node
+   // src/modules/shared.module.ts
+
+   @Module({
+     imports: [
+       TypeOrmModule.forFeature([
+         // …
+         ContactPerson,
+       ]),
+   // …
+   ```
+
+3. Generate a migration:
+
+   ``` shell
+   docker compose --project-name os2iot-docker exec os2iot-backend npm run generate-migration src/migration/name-of-migration
+   ```
+
+### Add entity property (in API)
+
+``` shell
+
+```
+
+---
+
+Talk to the database:
+
+``` shell
+docker compose --project-name os2iot-docker exec os2iot-postgresql psql os2iot os2iot
+```
diff --git a/README.md b/README.md
index 65553ec..723508d 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,26 @@ task open
 - Email: `global-admin@os2iot.dk`
 - Password: `hunter2`
 
+#### ChirpStack Integration
+
+> [!NOTE]
+> The backend must be able to talk to ChirpStack to create new applications etc.
+
+Run
+
+```bash
+task setup:chirpstack
+```
+
+to generate and set an API key in `.env`, or do it manually:
+
+1. Open ChirpStack UI: `task open:chirpstack`
+2. Login with `admin` / `admin`
+3. Go to **API Keys** → Create a new API key (`/#/api-keys/create`)
+4. Enter key name and press Submit.
+4. Add to `.env` file: `CHIRPSTACK_API_KEY=your-key-here`
+5. Restart the backend: `docker compose up --detach os2iot-backend`
+
 **Available tasks:**
 
 ```bash
@@ -71,23 +91,19 @@ task clean              # Remove containers, volumes, and images
 task open               # Open frontend in browser
 ```
 
-### ChirpStack Integration (Optional)
+## Backend API
 
-If you're using LoRaWAN features, you need to configure the ChirpStack API key:
+Run
 
-```bash
-# Run the setup task - it will guide you through the process
-task setup:chirpstack
+``` shell
+task backend:api-key:create
 ```
 
-Or manually:
-1. Open ChirpStack UI: `task open:chirpstack`
-2. Login with `admin` / `admin`
-3. Go to **API Keys** → Create a new API key
-4. Add to `.env` file: `CHIRPSTACK_API_KEY=your-key-here`
-5. Restart backend: `docker compose up -d os2iot-backend`
+to generate a backend API key. Use to fetch data:
 
-Without this configuration, you'll see `InvalidToken` errors in the backend logs - these can be ignored if you're not using LoRaWAN features.
+``` shell
+curl --header 'X-API-KEY: …' "http://$(docker compose port nginx 80)/api/v1/application"
+```
 
 ## Configuration
 
@@ -98,6 +114,10 @@ Edit the files in the configuration folder to adjust settings for each requireme
 - Postgres from the official image.
 - Chirpstack using their Docker Compose
 
+## Development
+
+See [Development](./Development.md) for some details on how to start the containers in development mode.
+
 ## Troubleshooting FAQ
 
 ### Docker File Sharing issues
@@ -116,23 +136,6 @@ Docker doesn't have access to mount the volumes.
 Solution:
 On Windows: Go to Docker Desktop (tray icon) -> Settings -> Resources -> File Sharing -> Add the directory which is the parent directory of "OS2IoT-docker" or a parent of that. -> Apply & Restart
 
-### error: database "os2iot-e2e" does not exist
-
-```
-[ExceptionHandler] Unable
-to connect to the database. Retrying (1)...
-error: database "os2iot-e2e" does not exist
-    at Parser.parseErrorMessage
-```
-
-Cause:
-Database has not been setup correctly on local machine.
-
-Solution:
-docker compose down --volumes
-dos2unix configuration/os2iot-postgresql/initdb/*  # Run from git bash on Windows
-docker compose up
-
 ### error: Error: connect ETIMEDOUT xxx.xxx.xxx.xxx:xxxx at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1141:16)
 
 Cause:
diff --git a/Taskfile.yml b/Taskfile.yml
index 8cdd0e6..4f1a81e 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -17,7 +17,6 @@ tasks:
     desc: Run all setup steps (clone repos, fix line endings, generate certs)
     cmds:
       - task: setup:clone-repos
-      - task: setup:fix-line-endings
       - task: setup:certs
       - task: setup:check
 
@@ -40,20 +39,6 @@ tasks:
           echo "OS2IoT-frontend already exists"
         fi
 
-  setup:fix-line-endings:
-    desc: Fix line endings on database init scripts (for Windows/cross-platform)
-    silent: true
-    cmds:
-      - |
-        if command -v dos2unix &> /dev/null; then
-          dos2unix configuration/os2iot-postgresql/initdb/*.sh 2>/dev/null || true
-          dos2unix configuration/postgres/initdb/*.sh 2>/dev/null || true
-          dos2unix configuration/postgresql/initdb/*.sh 2>/dev/null || true
-          echo "Line endings fixed"
-        else
-          echo "dos2unix not installed - skipping (install with: apt install dos2unix)"
-        fi
-
   setup:certs:
     desc: Generate MQTT broker certificates (CA and server)
     silent: true
@@ -111,7 +96,7 @@ tasks:
         fi
         TOKEN=$(curl -s -X POST "http://localhost:${NGINX_PORT}/api/v1/auth/login" \
           -H "Content-Type: application/json" \
-          -d '{"username":"global-admin@os2iot.dk","password":"hunter2"}' | jq -r '.accessToken')
+          -d '{"username":"global-admin@os2iot.dk","password":"hunter2"}' | docker run -i --rm ghcr.io/jqlang/jq -r '.accessToken')
         if [ "$TOKEN" = "null" ] || [ -z "$TOKEN" ]; then
           echo "✗ Failed to login - ensure services are running"
           exit 1
@@ -131,28 +116,7 @@ tasks:
     silent: true
     cmds:
       - |
-        CHIRPSTACK_PORT=$(docker compose port chirpstack 8080 2>/dev/null | cut -d: -f2)
-        if [ -z "$CHIRPSTACK_PORT" ]; then
-          echo "✗ ChirpStack not running (run: docker compose up --detach)"
-          exit 1
-        fi
-        echo "=== ChirpStack API Key Setup ==="
-        echo ""
-        echo "1. Opening ChirpStack UI at http://localhost:${CHIRPSTACK_PORT}"
-        echo "2. Login with: admin / admin"
-        echo "3. Go to: API Keys (in the left menu)"
-        echo "4. Click 'Add API key'"
-        echo "5. Give it a name and click 'Submit'"
-        echo "6. Copy the generated token"
-        echo ""
-        # Try to open in browser
-        if command -v xdg-open &> /dev/null; then
-          xdg-open "http://localhost:${CHIRPSTACK_PORT}" 2>/dev/null &
-        elif command -v open &> /dev/null; then
-          open "http://localhost:${CHIRPSTACK_PORT}" 2>/dev/null &
-        fi
-        echo "Paste your API key here (or press Ctrl+C to cancel):"
-        read -r API_KEY
+        API_KEY=$(docker compose exec chirpstack chirpstack --config /etc/chirpstack/ create-api-key --name test-development | grep 'token: ' | sed 's/^[^:]*: *//')
         if [ -n "$API_KEY" ]; then
           if [ -f ".env" ]; then
             if grep -q "^CHIRPSTACK_API_KEY=" .env; then
@@ -214,3 +178,83 @@ tasks:
         else
           echo "Open in browser: $URL"
         fi
+
+  backend:api-key:create:
+    desc: Create backend API key
+    silent: true
+    cmds:
+      - |
+        NGINX_PORT=$(docker compose port nginx 80 | cut -d: -f2)
+        if [ -z "$NGINX_PORT" ]; then
+          echo "✗ Services not running (run: docker compose up --detach)"
+          exit 1
+        fi
+        TOKEN=$(curl -s -X POST "http://localhost:${NGINX_PORT}/api/v1/auth/login" \
+          -H "Content-Type: application/json" \
+          -d '{"username":"global-admin@os2iot.dk","password":"hunter2"}' | docker run -i --rm ghcr.io/jqlang/jq -r '.accessToken')
+        if [ "$TOKEN" = "null" ] || [ -z "$TOKEN" ]; then
+          echo "✗ Failed to login - ensure services are running"
+          exit 1
+        fi
+
+        # Permissions
+        #
+        #  id |                       name
+        # ----+---------------------------------------------------
+        #   2 | Default Organization - Læserettigheder
+        #   3 | Default Organization - Applikationsadministrator
+        #   4 | Default Organization - Organisationsadministrator
+
+        RESULT=$(curl -s -X POST "http://localhost:${NGINX_PORT}/api/v1/api-key" \
+          -H "Authorization: Bearer $TOKEN" \
+          -H "Content-Type: application/json" \
+          -d '{"name":"test-development", "expiresOn": "2100-01-01T00:00:00Z", "permissionIds": [ 2, 3, 4 ]}')
+        if echo "$RESULT" | grep -q '"key"'; then
+          API_KEY=$(echo "$RESULT" | docker run -i --rm ghcr.io/jqlang/jq --raw-output '.key')
+          echo "✓ API key:"
+          echo
+          echo "$API_KEY"
+        else
+          echo "Error creating API key: $RESULT"
+        fi
+
+  dev:start:
+    desc: Start containers in development mode
+    cmds:
+      - task: dev:compose
+        vars:
+          TASK_ARGS: up --build --detach --wait
+
+  dev:stop:
+    desc: Stop containers in development mode
+    cmds:
+      - task: dev:compose
+        vars:
+          TASK_ARGS: stop
+
+  dev:status:
+    desc: Show status of development containers
+    cmds:
+        # We use `printf` to escape having Task processing the placeholders.
+        - docker compose --file docker-compose.development.yml ps os2iot-frontend  os2iot-backend --format '{{printf "{{.Image}} {{.State}}\t{{.Status}}"}}'
+
+  dev:log:
+    desc: "Follow development container log; examples: `task {{.TASK}} SERVICE=frontend` or `task {{.TASK}} --interactive`"
+    # https://taskfile.dev/blog/if-and-variable-prompt#prompt-for-required-variables
+    requires:
+      vars:
+        - name: SERVICE
+          enum: [frontend, backend]
+    cmds:
+      - task: dev:compose
+        vars:
+          TASK_ARGS: logs --follow os2iot-{{.SERVICE}}
+
+  dev:compose:
+    desc: Start containers in development mode
+    cmds:
+      - docker compose {{range .COMPOSE_FILES}} --file {{.}}{{end}} {{.TASK_ARGS}} {{.CLI_ARGS}}
+    vars:
+        COMPOSE_FILES:
+            - docker-compose.yml
+            - docker-compose.development.yml
diff --git a/configuration/os2iot-postgresql/initdb/001-init-os2iot.sh b/configuration/os2iot-postgresql/initdb/001-init-os2iot.sh
old mode 100644
new mode 100755
diff --git a/configuration/os2iot-postgresql/initdb/002-init-os2iot-e2e.sh b/configuration/os2iot-postgresql/initdb/002-init-os2iot-e2e.sh
old mode 100644
new mode 100755
diff --git a/configuration/postgres/initdb/001-init-chirpstack.sh b/configuration/postgres/initdb/001-init-chirpstack.sh
old mode 100644
new mode 100755
diff --git a/configuration/postgres/initdb/002-chirpstack_extensions.sh b/configuration/postgres/initdb/002-chirpstack_extensions.sh
old mode 100644
new mode 100755
diff --git a/docker-compose.development.yml b/docker-compose.development.yml
new file mode 100644
index 0000000..26e463a
--- /dev/null
+++ b/docker-compose.development.yml
@@ -0,0 +1,19 @@
+services:
+  os2iot-frontend:
+    # https://mherman.org/blog/dockerizing-an-angular-app/
+    build:
+      dockerfile: "Dockerfile"
+    volumes:
+      - '../OS2IoT-frontend:/app'
+      - '/app/node_modules'
+
+  os2iot-backend:
+    build:
+      target: dev
+    volumes:
+      - '../OS2IoT-backend:/app'
+      - '/app/node_modules'
+
+  nginx:
+    ports:
+      - "8888:80"
diff --git a/docker-compose.yml b/docker-compose.yml
index 64a42f5..85eeb99 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -99,7 +99,7 @@ services:
       BASE_URL: /api/v1/
       TABLE_PAGE_SIZE: 25
     healthcheck:
-      test: ["CMD-SHELL", "bash -c 'echo > /dev/tcp/127.0.0.1/8081'"]
+      test: ["CMD-SHELL", "wget -q -O /dev/null http://127.0.0.1:8081 || exit 1"]
       interval: 10s
       timeout: 5s
       retries: 5
@@ -155,13 +155,12 @@ services:
       MQTT_SUPER_USER_PASSWORD: ${MQTT_SUPER_USER_PASSWORD:-super_user_password}
       CHIRPSTACK_API_KEY: ${CHIRPSTACK_API_KEY:-} # Create in ChirpStack UI: http://localhost:8080 -> API Keys
     volumes:
-      - ./configuration/mosquitto-broker-os2iot/ca.crt:/tmp/os2iot/backend/dist/resources/ca.crt
-      - ./configuration/mosquitto-broker-os2iot/ca.key:/tmp/os2iot/backend/dist/resources/ca.key
-      - ./configuration/mosquitto-broker-os2iot/ca.crt:/tmp/os2iot/backend/resources/ca.crt
-      - ./configuration/mosquitto-broker-os2iot/ca.key:/tmp/os2iot/backend/resources/ca.key
+      - ./configuration/mosquitto-broker-os2iot/ca.crt:/app/dist/resources/ca.crt
+      - ./configuration/mosquitto-broker-os2iot/ca.key:/app/dist/resources/ca.key
+      - ./configuration/mosquitto-broker-os2iot/ca.crt:/app/resources/ca.crt
+      - ./configuration/mosquitto-broker-os2iot/ca.key:/app/resources/ca.key
 
   os2iot-postgresql:
-    restart: always
     image: postgis/postgis # We need postgis to store geodata
     ports:
       - "5433"