fix CI build steps

.github/workflows/cmake.yml

@@ -22,12 +22,12 @@ jobs:
 
       - name: Install libraries (Linux)
         if: ${{ matrix.os == 'ubuntu-latest' }}
-        run: sudo apt-get install -y libevent-dev
+        run: sudo apt-get install -y cmake libasio-dev
 
       - name: Install libraries (macOS)
         if: ${{ matrix.os == 'macos-latest' }}
         run: |
-          brew install libevent
+          brew install cmake asio libiconv
 
           cat << EOF > nproc
           #!/bin/sh

Dockerfile

@@ -11,7 +11,7 @@ RUN apt update && apt install -y --no-install-recommends \
     make \
     cmake \
     g++ \
-    libevent-dev \
+    libasio-dev \
     zlib1g-dev
 
 # ---
@@ -72,7 +72,7 @@ RUN cp -f system/config.example.json system/config.json && \
 FROM ${BASE_IMAGE} AS final
 
 RUN apt update && apt install -y --no-install-recommends \
-    libevent-dev \
+    libasio-dev \
     && rm -rf /var/lib/apt/lists/* /var/cache/apt/*
 
 WORKDIR /newserv