Move the Dockerfile inside an alpine subdirectory

docker/biboumi/alpine/Dockerfile

@@ -0,0 +1,46 @@
+# This Dockerfile creates a docker image running biboumi
+#
+# It is built by compiling the sources and all its dependencies
+# directly inside the image.
+# This is the prefered way to build the release image, used by the
+# end users, in production.
+
+FROM docker.io/alpine:latest
+
+RUN apk add --no-cache\
+    g++\
+    cmake\
+    make\
+    udns-dev\
+    sqlite-dev\
+    libuuid\
+    util-linux-dev\
+    expat-dev\
+    libidn-dev\
+    git\
+    python2
+
+# Install botan
+RUN git clone https://github.com/randombit/botan.git && cd botan && ./configure.py --prefix=/usr && make -j8 && make install && rm -rf /botan
+
+# Install biboumi
+RUN git clone git://git.louiz.org/biboumi && mkdir ./biboumi/build && cd ./biboumi/build &&\
+   cmake .. -DCMAKE_INSTALL_PREFIX=/usr\
+            -DCMAKE_BUILD_TYPE=Release\
+            -DWITH_BOTAN=1\
+            -DWITH_SQLITE3=1\
+            -DWITH_LIBIDN=1\
+   && make -j8 && make install && rm -rf /biboumi
+
+RUN adduser biboumi -D -h /home/biboumi
+
+RUN mkdir /var/lib/biboumi
+RUN chown -R biboumi:biboumi /var/lib/biboumi
+
+COPY ../biboumi.cfg /etc/biboumi/biboumi.cfg
+RUN chown -R biboumi:biboumi /etc/biboumi
+
+WORKDIR /home/biboumi
+USER biboumi
+
+CMD ["/usr/bin/biboumi", "/etc/biboumi/biboumi.cfg"]