diff --git a/Dockerfile b/Dockerfile
index 8fce20a..d45816f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -32,7 +32,7 @@ WORKDIR ${SALT_BUILD_DIR}
 # hadolint ignore=DL3008
 RUN apt-get update \
  && DEBIAN_FRONTEND=noninteractive apt-get install --yes --quiet --no-install-recommends \
-    sudo ca-certificates apt-transport-https wget locales pkg-config openssh-client \
+    sudo ca-certificates apt-transport-https wget locales openssh-client \
     python${PYTHON_VERSION} python${PYTHON_VERSION}-dev \
     python3-pip python3-setuptools python3-wheel \
     supervisor logrotate git gettext-base tzdata \
diff --git a/assets/build/install.sh b/assets/build/install.sh
index a7b4408..3cadcfb 100755
--- a/assets/build/install.sh
+++ b/assets/build/install.sh
@@ -4,15 +4,17 @@ set -e
 
 source "${SALT_BUILD_DIR}/functions.sh"
 
-echo "Updating repositories ..."
+echo "Installing build dependencies ..."
+BUILD_DEPENDENCIES=(make gcc g++ cmake pkg-config)
+
 apt-get update
+DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y "${BUILD_DEPENDENCIES[@]}"
 
 # Install arm build dependencies
 if [[ "$(uname -i)" =~ ^(arm|aarch64) ]]; then
-  echo "Installing arm dependencies ..."
+  echo "Installing arm specific dependencies ..."
   DEBIAN_FRONTEND=noninteractive apt-get install --yes --quiet --no-install-recommends \
-    make gcc g++ cmake libzmq3-dev \
-    libhttp-parser-dev libssl-dev libcurl4-openssl-dev
+    libzmq3-dev libhttp-parser-dev libssl-dev libcurl4-openssl-dev
 fi
 
 # Create salt user
@@ -107,5 +109,6 @@ stderr_logfile=${SALT_LOGS_DIR}/supervisor/%(program_name)s.log
 EOF
 
 # Purge build dependencies and cleanup apt
+DEBIAN_FRONTEND=noninteractive apt-get purge -y --auto-remove "${BUILD_DEPENDENCIES[@]}"
 DEBIAN_FRONTEND=noninteractive apt-get clean --yes
 rm -rf /var/lib/apt/lists/*