P04

Dockerfile.dotnet

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+# Stage 1: Build stage
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS builder
+
+WORKDIR /src
+
+# Copy project files
+COPY dotnet/SimpleSocialMediaApplication/ .
+
+# Restore and build
+RUN dotnet restore
+RUN dotnet publish -c Release -o /app/publish
+
+# Stage 2: Runtime stage
+FROM mcr.microsoft.com/dotnet/aspnet:10.0
+
+WORKDIR /app
+
+# Set environment variables
+ENV ASPNETCORE_URLS=http://+:8000 \
+    DOTNET_URLS=http://+:8000
+
+# Install curl for health checks
+RUN apt-get update && apt-get install -y curl && \
+    rm -rf /var/lib/apt/lists/*
+
+# Copy published application from builder
+COPY --from=builder /app/publish .
+
+# Expose port
+EXPOSE 8000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8000 || exit 1
+
+# Run the application
+CMD ["dotnet", "SimpleSocialMediaApplication.dll"]

Dockerfile.java

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+# Stage 1: Build stage
+FROM mcr.microsoft.com/openjdk/jdk:21-ubuntu AS builder
+
+WORKDIR /app
+
+# Install Maven
+RUN apt-get update && apt-get install -y maven && rm -rf /var/lib/apt/lists/*
+
+# Copy Maven files
+COPY java/socialapp/pom.xml .
+COPY java/socialapp/src ./src
+
+# Build the application
+RUN mvn clean package -DskipTests
+
+# Stage 2: Runtime stage
+FROM mcr.microsoft.com/openjdk/jdk:21-ubuntu
+
+WORKDIR /app
+
+# Set environment variables
+ENV PATH="/usr/local/openjdk-21/bin:${PATH}" \
+    JAVA_HOME="/usr/local/openjdk-21"
+
+# Install SQLite and create database
+RUN apt-get update && apt-get install -y sqlite3 curl && \
+    rm -rf /var/lib/apt/lists/* && \
+    sqlite3 /app/sns_api.db < /dev/null
+
+# Copy the built JAR from builder stage
+COPY --from=builder /app/target/socialapp-*.jar /app/socialapp.jar
+
+# Expose port
+EXPOSE 8080
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8080/actuator/health || exit 1
+
+# Run the application
+CMD ["java", "-jar", "/app/socialapp.jar"]

compose.yaml

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+services:
+  contoso-backend:
+    build:
+      context: .
+      dockerfile: Dockerfile.java
+    image: contoso-backend:latest
+    container_name: contoso-backend
+    ports:
+      - "8080:8080"
+    environment:
+      - SPRING_PROFILES_ACTIVE=prod
+      - CODESPACE_NAME=${CODESPACE_NAME:-local}
+      - GITHUB_CODESPACES_PORT_FORWARDING_DOMAIN=${GITHUB_CODESPACES_PORT_FORWARDING_DOMAIN:-localhost}
+    volumes:
+      - backend-data:/app/data
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8080/actuator/health"]
+      interval: 30s
+      timeout: 3s
+      retries: 3
+      start_period: 5s
+    networks:
+      - contoso-network
+    restart: unless-stopped
+
+  contoso-frontend:
+    build:
+      context: .
+      dockerfile: Dockerfile.dotnet
+    image: contoso-frontend:latest
+    container_name: contoso-frontend
+    ports:
+      - "5000:8000"
+    environment:
+      - ASPNETCORE_ENVIRONMENT=Production
+      - ASPNETCORE_URLS=http://+:8000
+      - API_BASE_URL=http://contoso-backend:8080
+      - CODESPACE_NAME=${CODESPACE_NAME:-local}
+      - GITHUB_CODESPACES_PORT_FORWARDING_DOMAIN=${GITHUB_CODESPACES_PORT_FORWARDING_DOMAIN:-localhost}
+    depends_on:
+      contoso-backend:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8000"]
+      interval: 30s
+      timeout: 3s
+      retries: 3
+      start_period: 10s
+    networks:
+      - contoso-network
+    restart: unless-stopped
+
+volumes:
+  backend-data:
+    driver: local
+
+networks:
+  contoso-network:
+    driver: bridge

dotnet/SimpleSocialMediaApplication/App.razor

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+<Router AppAssembly="@typeof(App).Assembly" NotFoundPage="typeof(Pages.NotFound)">
+    <Found Context="routeData">
+        <RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)"/>
+        <FocusOnNavigate RouteData="@routeData" Selector="h1" />
+    </Found>
+</Router>

dotnet/SimpleSocialMediaApplication/Layout/MainLayout.razor

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+@inherits LayoutComponentBase
+<div class="page">
+    <div class="sidebar">
+        <NavMenu />
+    </div>
+
+    <main>
+        <div class="top-row px-4">
+            <a href="https://learn.microsoft.com/aspnet/core/" target="_blank">About</a>
+        </div>
+
+        <article class="content px-4">
+            @Body
+        </article>
+    </main>
+</div>

dotnet/SimpleSocialMediaApplication/Layout/MainLayout.razor.css

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+.page {
+    position: relative;
+    display: flex;
+    flex-direction: column;
+}
+
+main {
+    flex: 1;
+}
+
+.sidebar {
+    background-image: linear-gradient(180deg, rgb(5, 39, 103) 0%, #3a0647 70%);
+}
+
+.top-row {
+    background-color: #f7f7f7;
+    border-bottom: 1px solid #d6d5d5;
+    justify-content: flex-end;
+    height: 3.5rem;
+    display: flex;
+    align-items: center;
+}
+
+    .top-row ::deep a, .top-row ::deep .btn-link {
+        white-space: nowrap;
+        margin-left: 1.5rem;
+        text-decoration: none;
+    }
+
+    .top-row ::deep a:hover, .top-row ::deep .btn-link:hover {
+        text-decoration: underline;
+    }
+
+    .top-row ::deep a:first-child {
+        overflow: hidden;
+        text-overflow: ellipsis;
+    }
+
+@media (max-width: 640.98px) {
+    .top-row {
+        justify-content: space-between;
+    }
+
+    .top-row ::deep a, .top-row ::deep .btn-link {
+        margin-left: 0;
+    }
+}
+
+@media (min-width: 641px) {
+    .page {
+        flex-direction: row;
+    }
+
+    .sidebar {
+        width: 250px;
+        height: 100vh;
+        position: sticky;
+        top: 0;
+    }
+
+    .top-row {
+        position: sticky;
+        top: 0;
+        z-index: 1;
+    }
+
+    .top-row.auth ::deep a:first-child {
+        flex: 1;
+        text-align: right;
+        width: 0;
+    }
+
+    .top-row, article {
+        padding-left: 2rem !important;
+        padding-right: 1.5rem !important;
+    }
+}

dotnet/SimpleSocialMediaApplication/Layout/NavMenu.razor

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+<div class="top-row ps-3 navbar navbar-dark">
+    <div class="container-fluid">
+        <a class="navbar-brand" href="">SimpleSocialMediaApplication</a>
+        <button title="Navigation menu" class="navbar-toggler" @onclick="ToggleNavMenu">
+            <span class="navbar-toggler-icon"></span>
+        </button>
+    </div>
+</div>
+
+<div class="@NavMenuCssClass nav-scrollable" @onclick="ToggleNavMenu">
+    <nav class="nav flex-column">
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="" Match="NavLinkMatch.All">
+                <span class="bi bi-house-door-fill-nav-menu" aria-hidden="true"></span> Home
+            </NavLink>
+        </div>
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="counter">
+                <span class="bi bi-plus-square-fill-nav-menu" aria-hidden="true"></span> Counter
+            </NavLink>
+        </div>
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="weather">
+                <span class="bi bi-list-nested-nav-menu" aria-hidden="true"></span> Weather
+            </NavLink>
+        </div>
+    </nav>
+</div>
+
+@code {
+    private bool collapseNavMenu = true;
+
+    private string? NavMenuCssClass => collapseNavMenu ? "collapse" : null;
+
+    private void ToggleNavMenu()
+    {
+        collapseNavMenu = !collapseNavMenu;
+    }
+}

dotnet/SimpleSocialMediaApplication/Layout/NavMenu.razor.css

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+.navbar-toggler {
+    background-color: rgba(255, 255, 255, 0.1);
+}
+
+.top-row {
+    min-height: 3.5rem;
+    background-color: rgba(0,0,0,0.4);
+}
+
+.navbar-brand {
+    font-size: 1.1rem;
+}
+
+.bi {
+    display: inline-block;
+    position: relative;
+    width: 1.25rem;
+    height: 1.25rem;
+    margin-right: 0.75rem;
+    top: -1px;
+    background-size: cover;
+}
+
+.bi-house-door-fill-nav-menu {
+    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-house-door-fill' viewBox='0 0 16 16'%3E%3Cpath d='M6.5 14.5v-3.505c0-.245.25-.495.5-.495h2c.25 0 .5.25.5.5v3.5a.5.5 0 0 0 .5.5h4a.5.5 0 0 0 .5-.5v-7a.5.5 0 0 0-.146-.354L13 5.793V2.5a.5.5 0 0 0-.5-.5h-1a.5.5 0 0 0-.5.5v1.293L8.354 1.146a.5.5 0 0 0-.708 0l-6 6A.5.5 0 0 0 1.5 7.5v7a.5.5 0 0 0 .5.5h4a.5.5 0 0 0 .5-.5Z'/%3E%3C/svg%3E");
+}
+
+.bi-plus-square-fill-nav-menu {
+    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-plus-square-fill' viewBox='0 0 16 16'%3E%3Cpath d='M2 0a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V2a2 2 0 0 0-2-2H2zm6.5 4.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3a.5.5 0 0 1 1 0z'/%3E%3C/svg%3E");
+}
+
+.bi-list-nested-nav-menu {
+    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-list-nested' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M4.5 11.5A.5.5 0 0 1 5 11h10a.5.5 0 0 1 0 1H5a.5.5 0 0 1-.5-.5zm-2-4A.5.5 0 0 1 3 7h10a.5.5 0 0 1 0 1H3a.5.5 0 0 1-.5-.5zm-2-4A.5.5 0 0 1 1 3h10a.5.5 0 0 1 0 1H1a.5.5 0 0 1-.5-.5z'/%3E%3C/svg%3E");
+}
+
+.nav-item {
+    font-size: 0.9rem;
+    padding-bottom: 0.5rem;
+}
+
+    .nav-item:first-of-type {
+        padding-top: 1rem;
+    }
+
+    .nav-item:last-of-type {
+        padding-bottom: 1rem;
+    }
+
+    .nav-item ::deep a {
+        color: #d7d7d7;
+        border-radius: 4px;
+        height: 3rem;
+        display: flex;
+        align-items: center;
+        line-height: 3rem;
+    }
+
+.nav-item ::deep a.active {
+    background-color: rgba(255,255,255,0.37);
+    color: white;
+}
+
+.nav-item ::deep a:hover {
+    background-color: rgba(255,255,255,0.1);
+    color: white;
+}
+
+@media (min-width: 641px) {
+    .navbar-toggler {
+        display: none;
+    }
+
+    .collapse {
+        /* Never collapse the sidebar for wide screens */
+        display: block;
+    }
+
+    .nav-scrollable {
+        /* Allow sidebar to scroll for tall menus */
+        height: calc(100vh - 3.5rem);
+        overflow-y: auto;
+    }
+}