diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..83cd31d
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,40 @@
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+# Gcov files
+*.gcno
+*.gcov
+*.gcda
+
+# Python files
+*.pyc
+*.pyo
+
+# Build directories
+build/
+
+# Clion directory
+.idea/
\ No newline at end of file
diff --git a/docker/biboumi/alpine/Dockerfile b/docker/biboumi/alpine/Dockerfile
index d887327..28f843a 100644
--- a/docker/biboumi/alpine/Dockerfile
+++ b/docker/biboumi/alpine/Dockerfile
@@ -10,19 +10,22 @@ FROM docker.io/alpine:latest as builder
 RUN apk add --no-cache --virtual .build cmake expat-dev g++ git libidn-dev \
         make postgresql-dev python3 sqlite-dev udns-dev util-linux-dev botan3-dev
 
+COPY . /source
 
-RUN git clone https://codeberg.org/poezio/biboumi && \
-    mkdir ./biboumi/build && \
-    cd ./biboumi/build && \
+WORKDIR /source
+
+RUN mkdir build && cd build && \
     cmake .. -DCMAKE_INSTALL_PREFIX=/usr \
              -DCMAKE_BUILD_TYPE=Release \
              -DWITH_BOTAN=1 \
              -DWITHOUT_SYSTEMD=1 \
              -DWITH_SQLITE3=1 \
              -DWITH_LIBIDN=1 \
-             -DWITH_POSTGRESQL=1 && \
-    make -j8 && \
-    make install
+             -DWITH_POSTGRESQL=1 \
+             -DWITH_UDNS=1 \
+             -DWITH_LIBIDN=1 && \
+    cmake --build . && \
+    cmake --install .
 
 # ---
 
@@ -34,7 +37,7 @@ RUN apk add --no-cache libidn libpq libstdc++ libuuid postgresql-libs \
 COPY --from=builder /etc/biboumi /etc/biboumi
 COPY --from=builder /usr/bin/biboumi /usr/bin/biboumi
 
-COPY --from=builder /biboumi/docker/biboumi/alpine/biboumi.cfg /etc/biboumi/biboumi.cfg
+COPY --from=builder /source/docker/biboumi/alpine/biboumi.cfg /etc/biboumi/biboumi.cfg
 
 RUN adduser biboumi -D -h /home/biboumi && \
     mkdir /var/lib/biboumi && \