diff --git a/docker/Dockerfile b/docker/Dockerfile
index 9cd87be4..eb13c914 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -7,12 +7,17 @@ RUN apt update && \
         software-properties-common \
         gpg-agent \
         make \
+        cmake \
         autoconf \
         automake \
         libtool \
+        libusb-1.0 \
+        libusb-1.0-0-dev \
+        libgtk-3-dev pandoc \
         curl \
         wget \
         g++ \
+        gcc \
         unzip \
         build-essential \
         python \
@@ -21,6 +26,8 @@ RUN apt update && \
         imagemagick \
         srecord \
         git \
+        pkg-config \
+        dfu-util \
         && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 RUN wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key| apt-key add - && add-apt-repository "deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-12 main"
@@ -36,30 +43,18 @@ RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --profile=minimal --target thum
 
 # st-flash
 
-RUN apt update && \
-    apt install -y --no-install-recommends \
-    gcc build-essential cmake libusb-1.0 libusb-1.0-0-dev libgtk-3-dev pandoc \
-    && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
-    wget https://github.com/stlink-org/stlink/archive/v1.5.1.zip && \
+RUN wget https://github.com/stlink-org/stlink/archive/v1.5.1.zip && \
     unzip v1.5.1.zip && \
     cd stlink-1.5.1 && make clean && make release && \
     cd build/Release && make install && ldconfig
 
-# dfu-util
-
-RUN apt update && \
-    apt install -y --no-install-recommends \
-        dfu-util \
-    && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-
 # install arm-none-eabi
 
 RUN wget https://developer.arm.com/-/media/Files/downloads/gnu-rm/10-2020q4/gcc-arm-none-eabi-10-2020-q4-major-x86_64-linux.tar.bz2 && \
     tar xjf gcc-arm-none-eabi-10-2020-q4-major-x86_64-linux.tar.bz2 && \
     cd gcc-arm-none-eabi-10-2020-q4-major/bin/ && \
-    for file in * ; do ln -s ${PWD}/${file} /usr/bin/${file} ; done
-
-RUN cd / && arm-none-eabi-gcc -v && arm-none-eabi-gdb -v
+    for file in * ; do ln -s ${PWD}/${file} /usr/bin/${file} ; done && \
+    cd / && arm-none-eabi-gcc -v && arm-none-eabi-gdb -v
     
 # install hex2dfu
 
@@ -68,6 +63,12 @@ RUN wget https://github.com/rusdacent/hex2dfu/archive/master.zip --output-docume
     cd hex2dfu-master && gcc hex2dfu.c ED25519/*.c -o hex2dfu && \
     ln -s ${PWD}/hex2dfu /usr/bin/hex2dfu
 
+# install openocd
+
+RUN git clone --depth 1 --branch v0.11.0 https://github.com/ntfreak/openocd.git && \
+    cd openocd && ./bootstrap && ./configure && ls -la && make install && \
+    openocd --version
+
 COPY entrypoint.sh syntax_check.sh /
 
 RUN chmod +x /syntax_check.sh