Add GitLab CI, Dockerfile, and demo-1

* Configured GitLab CI for Docker image builds and added a Dockerfile with the necessary setup for the main website and demo-1.
* Updated URL and removed duplicate entry in `demos.ts` to resolve conflicts.
* Integrated `.run` configuration for lawfirm-demo1 to streamline local development.

.gitlab-ci-template.yml

@@ -0,0 +1,10 @@
+.docker-login:
+  before_script:
+    - echo "$CI_REGISTRY_PASSWORD" | docker login "$CI_REGISTRY" -u "$CI_REGISTRY_USER" --password-stdin
+
+docker-build-template:
+  image: docker:20.10@sha256:2967f0819c84dd589ed0a023b9d25dcfe7a3c123d5bf784ffbb77edf55335f0c
+  extends: .docker-login
+  script:
+    - docker build --build-arg WORKDIR_PATH=$WORKDIR_PATH -t $CI_REGISTRY_IMAGE/$IMAGE_NAME:$CI_COMMIT_REF_SLUG -f $DOCKERFILE_PATH .
+    - docker push $CI_REGISTRY_IMAGE/$IMAGE_NAME:$CI_COMMIT_REF_SLUG

.gitlab-ci.yml

@@ -0,0 +1,28 @@
+image: docker:20.10
+
+include:
+  - local: '.gitlab-ci-template.yml'
+
+stages:
+  - dockerize
+
+variables:
+  CI_REGISTRY_IMAGE: $CI_REGISTRY/$CI_PROJECT_PATH
+  PROJECT_NAME: $CI_PROJECT_NAME
+  TAG: $CI_COMMIT_REF_SLUG
+
+# Main Website
+build_main_website:
+  stage: dockerize
+  extends: .docker-build-template
+  variables:
+    IMAGE_NAME: main-website
+    WORKDIR_PATH: ./main-website
+
+# Demo 1
+build_demo_1:
+  stage: dockerize
+  extends: .docker-build-template
+  variables:
+    IMAGE_NAME: ld1
+    WORKDIR_PATH: ./lawfirm-demos/demo-1

.run/lawfirm-demo1.run.xml

@@ -0,0 +1,14 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="lawfirm-demo1" type="js.build_tools.npm">
+    <package-json value="$PROJECT_DIR$/lawfirm-demos/demo-1/package.json" />
+    <command value="run" />
+    <scripts>
+      <script value="dev" />
+    </scripts>
+    <node-interpreter value="project" />
+    <envs>
+      <env name="PORT" value="5101" />
+    </envs>
+    <method v="2" />
+  </configuration>
+</component>

Dockerfile

@@ -0,0 +1,28 @@
+# Use a lightweight Node.js 20 Alpine image (digest-pinned for reproducibility)
+FROM node:20-alpine@sha256:9bef0ef1e268f60627da9ba7d7605e8831d5b56ad07487d24d1aa386336d1944
+
+# Accept a build argument for the working directory
+ARG WORKDIR_PATH
+
+# Set the working directory inside the container
+WORKDIR /app
+
+# Copy only the production-ready files built in CI
+# These files must be passed as GitLab artifacts:
+# - .next/         → built Next.js app
+# - public/        → static assets
+# - package.json   → app manifest
+# - package-lock.json → to lock dependencies for reproducibility
+COPY ${WORKDIR_PATH}/.next .next
+COPY ${WORKDIR_PATH}/public public
+COPY ${WORKDIR_PATH}/package.json package.json
+COPY ${WORKDIR_PATH}/package-lock.json package-lock.json
+
+# Install only production dependencies to reduce image size
+RUN npm ci --omit=dev
+
+# Expose the port that Next.js serves on (default is 3000)
+EXPOSE 3000
+
+# Start the Next.js app in production mode
+CMD ["npm", "run", "start"]

main-website/app/data/demos.ts

@@ -14,7 +14,7 @@ export const demoCategories = [
             },
             {
                 name: 'Anwaltskanzlei Demo 2',
-                url: 'http://localhost:5102',
+                url: 'http://localhost:5101',
                 preview: '/previews/lawfirm-1.png',
                 description: [
                     'Modernes Design',
@@ -23,18 +23,6 @@ export const demoCategories = [
                     'Optimiert für Rechtsanwälte 1',
                 ],
             },
-            {
-                name: 'Anwaltskanzlei Demo 2',
-                url: 'http://localhost:5102',
-                preview: '/previews/lawfirm-1.png',
-                description: [
-                    'Modernes Design',
-                    'Dunkles Layout',
-                    'Optimiert für Rechtsanwälte',
-                    'Optimiert für Rechtsanwälte 2',
-                    'Optimiert für Rechtsanwälte 3',
-                ],
-            },
         ],
     },
     {