.dockerignore.yml

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+# Ignore build artifacts
+target/
+pkg/
+
+# Ignore git directory
+.git/
+
+.gitea/
+
+# Ignore environment files (configure via docker-compose instead)
+.env*
+
+# Ignore OS specific files
+*.DS_Store
+
+# Add any other files/directories you don't need in the image
+# e.g., logs/, tmp/

Dockerfile

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+# Stage 1: Build the application
+# Use a specific Rust version for reproducibility. Choose one that matches your development environment.
+# Using slim variant for smaller base image
+FROM rust:1.95 as builder
+
+# Set the working directory inside the container
+WORKDIR /usr/src/app
+
+# Install build dependencies if needed (e.g., for certain crates like sqlx with native TLS)
+# RUN apt-get update && apt-get install -y pkg-config libssl-dev
+
+# Install build dependencies if needed (e.g., git for cloning)
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    pkg-config libssl3 \
+    ca-certificates \
+    openssh-client git \
+    && rm -rf /var/lib/apt/lists/*
+
+# << --- ADD HOST KEY HERE --- >>
+# Replace 'yourgithost.com' with the actual hostname (e.g., github.com)
+RUN mkdir -p -m 0700 ~/.ssh && \
+    ssh-keyscan git.kundeng.us >> ~/.ssh/known_hosts
+
+# Copy Cargo manifests
+COPY Cargo.toml Cargo.lock ./
+
+# Build *only* dependencies to leverage Docker cache
+# This dummy build caches dependencies as a separate layer
+RUN --mount=type=ssh mkdir src && \
+    echo "fn main() {println!(\"if you see this, the build broke\")}" > src/main.rs && \
+    cargo build --release --quiet && \
+    rm -rf src target/release/deps/textsender_auth* # Clean up dummy build artifacts
+
+# Copy the actual source code
+COPY src ./src
+# If you have other directories like `templates` or `static`, copy them too
+COPY .env ./.env
+COPY migrations ./migrations
+
+# << --- SSH MOUNT ADDED HERE --- >>
+# Build *only* dependencies to leverage Docker cache
+# This dummy build caches dependencies as a separate layer
+# Mount the SSH agent socket for this command
+RUN --mount=type=ssh \
+    cargo build --release --quiet
+
+# Stage 2: Create the final, smaller runtime image
+# Use a minimal base image like debian-slim or even distroless for security/size
+FROM debian:trixie-slim
+
+# Install runtime dependencies if needed (e.g., SSL certificates)
+RUN apt-get update && apt-get install -y ca-certificates libssl-dev libssl3 && rm -rf /var/lib/apt/lists/*
+
+# Set the working directory
+WORKDIR /usr/local/bin
+
+# Copy the compiled binary from the builder stage
+COPY --from=builder /usr/src/app/target/release/textsender_auth .
+
+# Copy other necessary files like .env (if used for runtime config) or static assets
+# It's generally better to configure via environment variables in Docker though
+COPY --from=builder /usr/src/app/.env .
+COPY --from=builder /usr/src/app/migrations ./migrations
+
+# Expose the port your Axum app listens on (e.g., 3000 or 8000)
+EXPOSE 8001
+
+# Set the command to run your application
+# Ensure this matches the binary name copied above
+CMD ["./textsender_auth"]

docker-compose.yml

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+version: '3.8' # Use a recent version
+
+services:
+  # Your Rust Application Service
+  auth_api:
+    build: # Tells docker-compose to build the Dockerfile in the current directory
+      context: .
+      ssh: ["default"]  # Uses host's SSH agent
+    container_name: textsender_auth # Optional: Give the container a specific name
+    ports:
+      # Map host port 8000 to container port 3000 (adjust as needed)
+      - "9080:9080"
+    env_file:
+      - .env
+    depends_on:
+      auth_db:
+        condition: service_healthy # Wait for the DB to be healthy before starting the app
+    restart: unless-stopped # Optional: Restart policy
+
+  # PostgreSQL Database Service
+  auth_db:
+    image: postgres:18.4-alpine # Use an official Postgres image (Alpine variant is smaller)
+    container_name: textsender_auth_db # Optional: Give the container a specific name
+    environment:
+      # These MUST match the user, password, and database name in the DATABASE_URL above
+      POSTGRES_USER: ${POSTGRES_AUTH_USER:-textsender_op}
+      POSTGRES_PASSWORD: ${POSTGRES_AUTH_PASSWORD:-password}
+      POSTGRES_DB: ${POSTGRES_AUTH_DB:-textsender_auth_db}
+    volumes:
+      # Persist database data using a named volume
+      - postgres_data:/var/lib/postgresql
+    ports: []
+    healthcheck:
+        # Checks if Postgres is ready to accept connections
+        test: ["CMD-SHELL", "pg_isready -U $$POSTGRES_USER -d $$POSTGRES_DB"]
+        interval: 10s
+        timeout: 5s
+        retries: 5
+        start_period: 10s
+    restart: always # Optional: Restart policy
+
+# Define the named volume for data persistence
+volumes:
+  postgres_data:
+    driver: local # Use the default local driver