diff --git a/build/docker/old/debian-stretch/Dockerfile b/build/docker/old/debian-stretch/Dockerfile
index ebb5e24..541223c 100644
--- a/build/docker/old/debian-stretch/Dockerfile
+++ b/build/docker/old/debian-stretch/Dockerfile
@@ -102,7 +102,10 @@
 # project isn't ready for this quite yet:
 # RUN apt-get install -y --no-install-recommends \
 # `# dotnet core dependencies` \
-#       dotnet-sdk-5.0
+#       dotnet-sdk-5.0 \
+#       dotnet-runtime-5.0 \
+#       aspnetcore-runtime-5.0 \
+#       dotnet-apphost-pack-5.0
 
 RUN apt-get install -y --no-install-recommends \
 `# Erlang dependencies` \
diff --git a/build/docker/old/ubuntu-artful/Dockerfile b/build/docker/old/ubuntu-artful/Dockerfile
index cb723a2..282429a 100644
--- a/build/docker/old/ubuntu-artful/Dockerfile
+++ b/build/docker/old/ubuntu-artful/Dockerfile
@@ -114,13 +114,16 @@
     rm -rf openssl-master
 
 RUN apt-get install -y --no-install-recommends \
-      `# Dart dependencies` \
+`# Dart dependencies` \
       dart=$DART_VERSION
 ENV PATH /usr/lib/dart/bin:$PATH
 
 RUN apt-get install -y --no-install-recommends \
 `# dotnet core dependencies` \
-      dotnet-sdk-5.0
+      dotnet-sdk-5.0 \
+      dotnet-runtime-5.0 \
+      aspnetcore-runtime-5.0 \
+      dotnet-apphost-pack-5.0
 
 RUN apt-get install -y --no-install-recommends \
 `# Erlang dependencies` \
diff --git a/build/docker/ubuntu-bionic/Dockerfile b/build/docker/ubuntu-bionic/Dockerfile
index fc086cf..bd82225 100644
--- a/build/docker/ubuntu-bionic/Dockerfile
+++ b/build/docker/ubuntu-bionic/Dockerfile
@@ -120,13 +120,16 @@
 
 ENV DART_VERSION 2.7.2-1
 RUN apt-get install -y --no-install-recommends \
-      `# Dart dependencies` \
+`# Dart dependencies` \
       dart=$DART_VERSION
 ENV PATH /usr/lib/dart/bin:$PATH
 
 RUN apt-get install -y --no-install-recommends \
 `# dotnet core dependencies` \
-      dotnet-sdk-5.0
+      dotnet-sdk-5.0 \
+      dotnet-runtime-5.0 \
+      aspnetcore-runtime-5.0 \
+      dotnet-apphost-pack-5.0
 
 RUN apt-get install -y --no-install-recommends \
 `# Erlang dependencies` \
diff --git a/build/docker/ubuntu-disco/Dockerfile b/build/docker/ubuntu-disco/Dockerfile
index af8f47f..6b35915 100644
--- a/build/docker/ubuntu-disco/Dockerfile
+++ b/build/docker/ubuntu-disco/Dockerfile
@@ -120,13 +120,16 @@
 
 ENV DART_VERSION 2.7.2-1
 RUN apt-get install -y --no-install-recommends \
-      `# Dart dependencies` \
+`# Dart dependencies` \
       dart=$DART_VERSION
 ENV PATH /usr/lib/dart/bin:$PATH
 
 RUN apt-get install -y --no-install-recommends \
 `# dotnet core dependencies` \
-      dotnet-sdk-5.0
+      dotnet-sdk-5.0 \
+      dotnet-runtime-5.0 \
+      aspnetcore-runtime-5.0 \
+      dotnet-apphost-pack-5.0
 
 RUN apt-get install -y --no-install-recommends \
 `# Erlang dependencies` \
diff --git a/build/docker/ubuntu-xenial/Dockerfile b/build/docker/ubuntu-xenial/Dockerfile
index 3443f92..1d78a28 100644
--- a/build/docker/ubuntu-xenial/Dockerfile
+++ b/build/docker/ubuntu-xenial/Dockerfile
@@ -113,7 +113,10 @@
 
 RUN apt-get install -y --no-install-recommends \
 `# dotnet core dependencies` \
-      dotnet-sdk-5.0
+      dotnet-sdk-5.0 \
+      dotnet-runtime-5.0 \
+      aspnetcore-runtime-5.0 \
+      dotnet-apphost-pack-5.0
 
 RUN apt-get install -y --no-install-recommends \
 `# Erlang dependencies` \