diff --git a/.dockerignore b/.dockerignore
index becc94088..8801107ae 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,30 +1,6 @@
-abc
-ace2
-build
-cmake
-CMakeLists.txt
-deploy_key.enc
-docker
-Dockerfile
-docs
-libopenfpga
-libs
-LICENSE
-Makefile
-openfpga
-README.md
-run_local.bat
-run_local.sh
-vpr
-yosys
+# Ignore everything
+**
 
-!abc/abc
-!ace2/ace
-!openfpga/openfpga
-!vpr/vpr
-!yosys/yosys
-!yosys/yosys-abc
-!yosys/yosys-config
-!yosys/yosys-filterlib
-!yosys/yosys-smtbmc
-!yosys/share
+# Allow files and directories
+!/.github/**
+!/*.*
\ No newline at end of file
diff --git a/.github/workflows/install_dependencies_run.sh b/.github/workflows/install_dependencies_run.sh
index e6497d429..bbb9e22a3 100644
--- a/.github/workflows/install_dependencies_run.sh
+++ b/.github/workflows/install_dependencies_run.sh
@@ -1,2 +1,2 @@
-apt-get update && apt-get install -y libdatetime-perl iverilog python3-pip git \
+apt-get update && apt-get install --no-install-recommends -y libdatetime-perl iverilog python3-pip git \
     libc6 libffi6 libgcc1 libreadline7 libstdc++6 libtcl8.6 python3 zlib1g libbz2-1.0
diff --git a/docker/Dockerfile.env b/docker/Dockerfile.env
index d41ee6aeb..b0221231f 100644
--- a/docker/Dockerfile.env
+++ b/docker/Dockerfile.env
@@ -1,9 +1,9 @@
 FROM ubuntu:18.04
 ENV DEBIAN_FRONTEND=noninteractive
-RUN apt-get update && apt-get install software-properties-common -y
+RUN apt-get update && apt-get install --no-install-recommends software-properties-common -y
 # 18.04 includes 2.17 but github requires 2.18+ to support submodules.
 RUN add-apt-repository ppa:git-core/ppa
 ADD .github/workflows/install_dependencies_run.sh install_dependencies_run.sh
 RUN bash install_dependencies_run.sh
 ADD requirements.txt requirements.txt
-RUN python3 -m pip install -r requirements.txt
+RUN python3 -m pip install -r requirements.txt
\ No newline at end of file