diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5ce597b..a1170c1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,24 +22,24 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(C_WARNINGS -Wall -Wextra)
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
-if("${CMAKE_BUILD_TYPE}" STREQUAL "Debug")
+#if("${CMAKE_BUILD_TYPE}" STREQUAL "Debug")
+#
+#add_definitions(
+#	-pg
+#	--coverage
+#	-fprofile-arcs
+#	-ftest-coverage
+#)
 
-add_definitions(
-	-pg
-	--coverage
-	-fprofile-arcs
-	-ftest-coverage
-)
+#if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
+#	link_libraries(gcov)
+#else()
+#	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --coverage")
+#endif()
 
-if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
-	link_libraries(gcov)
-else()
-	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --coverage")
-endif()
+#set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pg -fprofile-arcs")
 
-set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs")
-
-endif()
+#endif()
 
 include_directories(
 	"include"
diff --git a/Makefile b/Makefile
index b0982c5..fe9c5d9 100644
--- a/Makefile
+++ b/Makefile
@@ -37,6 +37,7 @@ CONTAINER_GROUP ?= user
 
 UBUNTU_CODENAME ?= bionic
 DEBIAN_CODENAME ?= testing-slim
+ALPINE_CODENAME ?= 3.9
 
 SKIP_MD5SUM ?= $(call filter_out_command,md5sum)
 SKIP_MD5SUM := $(SKIP_MD5SUM)
@@ -84,7 +85,7 @@ $(SKIP_MD5SUM)$(FETCHDIR)/qemu-arm-static-$(QEMU_VERSION): MD5 := 8ebd24e63fdfa0
 # Architecture-specific rule target configuration
 
 CMAKE_TARGETS += amd64-ubuntu-builder
-CMAKE_TARGETS += amd64-debian-builder
+CMAKE_TARGETS += amd64-alpine-builder
 CMAKE_TARGETS += arm32v7-ubuntu-builder
 CMAKE_TARGETS += arm32v7-debian-builder
 
@@ -96,6 +97,9 @@ UBUNTU_TARGETS = $(addprefix $(OUTDIR)/docker/,$(call filter_targets,$(UBUNTU_FI
 DEBIAN_FILTER = $(call regex_march_distro,'.*','debian')
 DEBIAN_TARGETS = $(addprefix $(OUTDIR)/docker/,$(call filter_targets,$(DEBIAN_FILTER),$(TARGETS)))
 
+ALPINE_FILTER = $(call regex_march_distro,'.*','alpine')
+ALPINE_TARGETS = $(addprefix $(OUTDIR)/docker/,$(call filter_targets,$(ALPINE_FILTER),$(TARGETS)))
+
 #######################################################################################################################
 # Common rule target configuration
 
@@ -140,6 +144,8 @@ $(UBUNTU_TARGETS): CODENAME := $(UBUNTU_CODENAME)
 
 $(DEBIAN_TARGETS): CODENAME := $(DEBIAN_CODENAME)
 
+$(ALPINE_TARGETS): CODENAME := $(ALPINE_CODENAME)
+
 $(FETCH_TARGETS): | $(FETCHDIR)
 	$(SILENT)$(call curl,$@,$(URL),$(MD5))
 
diff --git a/build/amd64-debian-builder.dockerfile b/build/amd64-alpine-builder.dockerfile
similarity index 74%
rename from build/amd64-debian-builder.dockerfile
rename to build/amd64-alpine-builder.dockerfile
index 5231e2d..7dd8194 100644
--- a/build/amd64-debian-builder.dockerfile
+++ b/build/amd64-alpine-builder.dockerfile
@@ -1,20 +1,23 @@
 ARG REGISTRY_PREFIX=''
-ARG CODENAME=testing-slim
+ARG CODENAME=3.9
 
-FROM ${REGISTRY_PREFIX}debian:${CODENAME} as builder
+FROM ${REGISTRY_PREFIX}alpine:${CODENAME} as builder
 
 RUN set -x \
-  && apt update \
-  && apt upgrade -y \
-  && apt install --yes --no-install-recommends \
-       build-essential \
+  && apk add --no-cache \
+       bash \
+       coreutils \
+       gcc \
+       g++ \
+       make \
        cmake \
-       ninja-build \
-       pkg-config \
+       ninja \
+       pkgconf \
        rsync \
        gdb \
-       gdbserver \
-       valgrind
+       valgrind \
+       util-linux \
+       util-linux-dev
 
 COPY src /usr/local/src
 
@@ -23,8 +26,8 @@ ARG PARALLELMFLAGS=-j2
 ARG DUMB_INIT_VERSION=1.2.2
 
 RUN set -x \
-  && builddeps="xxd" \
-  && apt install --yes --no-install-recommends $builddeps \
+  && builddeps="vim" \
+  && apk add --no-cache --virtual .build-deps $builddeps \
   && builddir="/tmp/out" \
   && mkdir -p "$builddir" \
   && cd "$builddir" \
@@ -35,7 +38,7 @@ RUN set -x \
   && mv dumb-init /usr/local/bin/dumb-init \
   && dumb-init --version \
   && rm -rf "$builddir" \
-  && apt purge -y $builddeps
+  && apk del .build-deps
 
 ARG GTEST_VERSION=1.8.1
 
@@ -50,8 +53,8 @@ RUN set -x \
 ARG FUSE_VERSION=3.1.1
 
 RUN set -x \
-  && builddeps="libtool automake gettext" \
-  && apt install --yes --no-install-recommends $builddeps \
+  && builddeps="libtool automake autoconf gettext-dev m4 linux-headers" \
+  && apk add --no-cache --virtual .build-deps $builddeps \
   && cd "/usr/local/src/libfuse-fuse-$FUSE_VERSION" \
   && ./makeconf.sh \
   && builddir="/tmp/out" \
@@ -60,15 +63,15 @@ RUN set -x \
   && "/usr/local/src/libfuse-fuse-$FUSE_VERSION/configure" \
   && make "$PARALLELMFLAGS" install \
   && rm -rf "$builddir" \
-  && apt purge -y $builddeps
+  && apk del .build-deps
 
 ARG WEBSOCKETS_VERSION=3.1.0
 
 RUN set -x \
-  && apt install --yes --no-install-recommends \
+  && apk add --no-cache \
        ca-certificates \
        openssl \
-       libssl-dev \
+       openssl-dev \
   && builddir="/tmp/out" \
   && mkdir -p "$builddir" \
   && cd "$builddir" \
@@ -87,6 +90,7 @@ RUN set -x \
   && rm -rf "$builddir"
 
 ENV LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib"
+ENV PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig
 
 ARG USERID=1000
 
@@ -95,7 +99,7 @@ ARG OUTDIR=/workspace/out
 ARG SCRIPTDIR=/workspace/bin
 
 RUN set -x \
-  && useradd -u "$USERID" -ms /bin/bash user \
+  && adduser -u "$USERID" -s /bin/bash -D user \
   && mkdir -p "$PROJECTDIR" "$OUTDIR" "$SCRIPTDIR" \
   && chown user:user "$PROJECTDIR" "$OUTDIR" "$SCRIPTDIR"
 
@@ -105,4 +109,3 @@ ENTRYPOINT ["dumb-init", "--"]
 
 # unused
 ARG QEMU_VERSION_=v3.1.0-2
-