diff --git a/.dockerignore b/.dockerignore
index 52e4ee41..6c2ce7cb 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -3,3 +3,4 @@
 .idea
 **/*.pyc
 **/*.swp
+black-env
diff --git a/docker/scripts/install-connectors.sh b/docker/scripts/install-connectors.sh
index e117dc93..ec31bfe2 100755
--- a/docker/scripts/install-connectors.sh
+++ b/docker/scripts/install-connectors.sh
@@ -3,6 +3,9 @@ set -euxo pipefail
 
 function cmakebuild() {
   cd $1
+  if [[ ! -z "${2:-}" ]]; then
+    git checkout $2
+  fi
   mkdir build
   cd build
   cmake ..
@@ -19,7 +22,7 @@ BUILD_PACKAGES="git cmake make gcc g++ musl-dev"
 apk add --no-cache --virtual .build-deps $BUILD_PACKAGES
 
 
-git clone --depth 1 https://github.com/jketterl/owrx_connector.git
-cmakebuild owrx_connector
+git clone https://github.com/jketterl/owrx_connector.git
+cmakebuild owrx_connector 1a1a8615b4d92827d93d3135556e44b7b0bbc98f
 
 apk del .build-deps
diff --git a/docker/scripts/install-dependencies-airspy.sh b/docker/scripts/install-dependencies-airspy.sh
index 5b2c5def..b6cc2f3d 100755
--- a/docker/scripts/install-dependencies-airspy.sh
+++ b/docker/scripts/install-dependencies-airspy.sh
@@ -3,6 +3,9 @@ set -euxo pipefail
 
 function cmakebuild() {
   cd $1
+  if [[ ! -z "${2:-}" ]]; then
+    git checkout $2
+  fi
   mkdir build
   cd build
   cmake ..
@@ -20,16 +23,16 @@ BUILD_PACKAGES="git libusb-dev cmake make gcc musl-dev g++ linux-headers"
 apk add --no-cache $STATIC_PACKAGES
 apk add --no-cache --virtual .build-deps $BUILD_PACKAGES
 
-git clone --depth 1 https://github.com/airspy/airspyone_host.git
-cmakebuild airspyone_host
+git clone https://github.com/airspy/airspyone_host.git
+cmakebuild airspyone_host bceca18f9e3a5f89cff78c4d949c71771d92dfd3
 
-git clone --depth 1 https://github.com/pothosware/SoapyAirspy.git
-cmakebuild SoapyAirspy
+git clone https://github.com/pothosware/SoapyAirspy.git
+cmakebuild SoapyAirspy 99756be5c3413a2d447baf70cb5a880662452655
 
-git clone --depth 1 https://github.com/airspy/airspyhf.git
-cmakebuild airspyhf
+git clone https://github.com/airspy/airspyhf.git
+cmakebuild airspyhf 613852a2bb64af42690bf9be2201826af69a9475
 
-git clone --depth 1 https://github.com/pothosware/SoapyAirspyHF.git
-cmakebuild SoapyAirspyHF
+git clone https://github.com/pothosware/SoapyAirspyHF.git
+cmakebuild SoapyAirspyHF 54f5487dd96207540b2dd562ff9e718e0588770b
 
 apk del .build-deps
diff --git a/docker/scripts/install-dependencies-hackrf.sh b/docker/scripts/install-dependencies-hackrf.sh
index 02ab89d3..b9c4ec47 100755
--- a/docker/scripts/install-dependencies-hackrf.sh
+++ b/docker/scripts/install-dependencies-hackrf.sh
@@ -3,6 +3,9 @@ set -euxo pipefail
 
 function cmakebuild() {
   cd $1
+  if [[ ! -z "${2:-}" ]]; then
+    git checkout $2
+  fi
   mkdir build
   cd build
   cmake ..
@@ -20,8 +23,9 @@ BUILD_PACKAGES="git cmake make patch wget sudo gcc g++ libusb-dev fftw-dev"
 apk add --no-cache $STATIC_PACKAGES
 apk add --no-cache --virtual .build-deps $BUILD_PACKAGES
 
-git clone --depth 1 https://github.com/mossmann/hackrf.git
+git clone https://github.com/mossmann/hackrf.git
 cd hackrf
+git checkout 06eb9192cd348083f5f7de9c0da9ead276020011
 cmakebuild host
 cd ..
 rm -rf hackrf
diff --git a/docker/scripts/install-dependencies-rtlsdr.sh b/docker/scripts/install-dependencies-rtlsdr.sh
index c0ede17e..fdf0f220 100755
--- a/docker/scripts/install-dependencies-rtlsdr.sh
+++ b/docker/scripts/install-dependencies-rtlsdr.sh
@@ -3,6 +3,9 @@ set -euxo pipefail
 
 function cmakebuild() {
   cd $1
+  if [[ ! -z "${2:-}" ]]; then
+    git checkout $2
+  fi
   mkdir build
   cd build
   cmake ..
@@ -20,7 +23,7 @@ BUILD_PACKAGES="git libusb-dev cmake make gcc musl-dev g++ linux-headers"
 apk add --no-cache $STATIC_PACKAGES
 apk add --no-cache --virtual .build-deps $BUILD_PACKAGES
 
-git clone --depth 1 https://github.com/osmocom/rtl-sdr.git
-cmakebuild rtl-sdr
+git clone https://github.com/osmocom/rtl-sdr.git
+cmakebuild rtl-sdr b5af355b1d833b3c898a61cf1e072b59b0ea3440
 
 apk del .build-deps
diff --git a/docker/scripts/install-dependencies-sdrplay.sh b/docker/scripts/install-dependencies-sdrplay.sh
index 272ee78a..79ca0f45 100755
--- a/docker/scripts/install-dependencies-sdrplay.sh
+++ b/docker/scripts/install-dependencies-sdrplay.sh
@@ -3,6 +3,9 @@ set -euxo pipefail
 
 function cmakebuild() {
   cd $1
+  if [[ ! -z "${2:-}" ]]; then
+    git checkout $2
+  fi
   mkdir build
   cd build
   cmake ..
@@ -44,7 +47,7 @@ cd ..
 rm -rf sdrplay
 rm $BINARY
 
-git clone --depth 1 https://github.com/pothosware/SoapySDRPlay.git
-cmakebuild SoapySDRPlay
+git clone https://github.com/pothosware/SoapySDRPlay.git
+cmakebuild SoapySDRPlay 14ec39e4ff0dab7ae7fdf1afbbd2d28b49b0ffae
 
 apk del .build-deps
diff --git a/docker/scripts/install-dependencies-soapysdr.sh b/docker/scripts/install-dependencies-soapysdr.sh
index 5d2cf785..8c5bf980 100755
--- a/docker/scripts/install-dependencies-soapysdr.sh
+++ b/docker/scripts/install-dependencies-soapysdr.sh
@@ -3,6 +3,9 @@ set -euxo pipefail
 
 function cmakebuild() {
   cd $1
+  if [[ ! -z "${2:-}" ]]; then
+    git checkout $2
+  fi
   mkdir build
   cd build
   cmake ..
@@ -20,7 +23,7 @@ BUILD_PACKAGES="git cmake make patch wget sudo gcc g++"
 apk add --no-cache $STATIC_PACKAGES
 apk add --no-cache --virtual .build-deps $BUILD_PACKAGES
 
-git clone --depth 1 https://github.com/pothosware/SoapySDR
-cmakebuild SoapySDR
+git clone https://github.com/pothosware/SoapySDR
+cmakebuild SoapySDR a489f3dca9d3ccd9b276b95a608ac3ef0299f635
 
 apk del .build-deps
diff --git a/docker/scripts/install-dependencies.sh b/docker/scripts/install-dependencies.sh
index c22300b4..45a4ed3a 100755
--- a/docker/scripts/install-dependencies.sh
+++ b/docker/scripts/install-dependencies.sh
@@ -3,6 +3,9 @@ set -euxo pipefail
 
 function cmakebuild() {
   cd $1
+  if [[ ! -z "${2:-}" ]]; then
+    git checkout $2
+  fi
   mkdir build
   cd build
   cmake ..
@@ -20,24 +23,25 @@ BUILD_PACKAGES="git libsndfile-dev fftw-dev cmake ca-certificates make gcc musl-
 apk add --no-cache $STATIC_PACKAGES
 apk add --no-cache --virtual .build-deps $BUILD_PACKAGES
 
-git clone --depth 1 https://git.code.sf.net/p/itpp/git itpp
-cmakebuild itpp
+git clone https://git.code.sf.net/p/itpp/git itpp
+cmakebuild itpp bb5c7e95f40e8fdb5c3f3d01a84bcbaf76f3676d
 
-git clone --depth 1 https://github.com/jketterl/csdr.git
+git clone https://github.com/jketterl/csdr.git
 cd csdr
+git checkout e8453446fc4795abaa2b3c8ee20fd954b36ada6e
 make
 make install
 cd ..
 rm -rf csdr
 
-git clone --depth 1 https://github.com/szechyjs/mbelib.git
-cmakebuild mbelib
+git clone https://github.com/szechyjs/mbelib.git
+cmakebuild mbelib 9a04ed5c78176a9965f3d43f7aa1b1f5330e771f
 
-git clone --depth 1 https://github.com/jketterl/digiham.git
-cmakebuild digiham
+git clone https://github.com/jketterl/digiham.git
+cmakebuild digiham 01e1121d7de4d5acdd118c9b4c1c6509535db975
 
-git clone --depth 1 https://github.com/f4exb/dsd.git
-cmakebuild dsd
+git clone https://github.com/f4exb/dsd.git
+cmakebuild dsd f6939f9edbbc6f66261833616391a4e59cb2b3d7
 
 WSJT_DIR=wsjtx-2.1.2
 WSJT_TGZ=${WSJT_DIR}.tgz
@@ -53,6 +57,9 @@ make install
 cd ..
 rm -rf direwolf
 
-git clone --depth 1 https://github.com/hessu/aprs-symbols /opt/aprs-symbols
+git clone https://github.com/hessu/aprs-symbols /opt/aprs-symbols
+pushd /opt/aprs-symbols
+git checkout 5c2abe2658ee4d2563f3c73b90c6f59124839802
+popd
 
 apk del .build-deps