Implement dev env with Docker

Dockerfile.dev

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+FROM eclipse-temurin:21-jdk-jammy
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    curl \
+    vim \
+    git \
+    ca-certificates \
+    ffmpeg && \
+    rm -rf /var/lib/apt/lists/*
+
+# Create non-root user
+RUN groupadd --gid 1000 spring-app && \
+    useradd --uid 1000 --gid spring-app --shell /bin/bash --create-home spring-app
+
+RUN mkdir -p /home/spring-app/.m2 && \
+    chown -R spring-app:spring-app /home/spring-app/.m2
+
+WORKDIR /app
+
+COPY mvnw .
+COPY .mvn .mvn
+COPY pom.xml .
+COPY target target
+
+RUN chmod +x mvnw && \
+    chown -R spring-app:spring-app /app
+
+USER spring-app:spring-app
+
+COPY src ./src
+
+EXPOSE 8080
+
+ENTRYPOINT ["./mvnw", "spring-boot:run"]