backend: fix dockerfile

backend/Dockerfile

@@ -9,26 +9,9 @@ COPY . .
 RUN cargo build --release
 
 
-FROM debian:bullseye-slim
-
-ENV DEBIAN_FRONTEND=noninteractive
-
-RUN apt-get update && apt-get install -y \
-    wget \
-    build-essential \
-    ca-certificates \
-    && rm -rf /var/lib/apt/lists/*
-
-RUN wget https://www.openssl.org/source/openssl-3.0.0.tar.gz && \
-    tar -xzf openssl-3.0.0.tar.gz && \
-    cd openssl-3.0.0 && \
-    ./config --prefix=/usr/local/ssl --openssldir=/usr/local/ssl && \
-    make && \
-    make install && \
-    cd .. && \
-    rm -rf openssl-3.0.0 openssl-3.0.0.tar.gz
-
-ENV LD_LIBRARY_PATH="/usr/local/ssl/lib"
+FROM alpine:latest
+
+RUN apk add --no-cache openssl3 libgcc libstdc++ ca-certificates
 
 COPY --from=builder /usr/src/backend/target/release/backend /usr/local/bin/backend