diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 72c8b84..2a476bd 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -1,8 +1,12 @@
 {
-	"name": "C++",
+	"name": "4beumer.nl C++",
 	"build": {
-		"dockerfile": "../devcontainer.Dockerfile"
+		"dockerfile": "../devcontainer.Dockerfile",
+		"args": {
+			"BUILD_TYPE": "Debug"
+		}
 	},
+	"postCreateCommand": "${containerWorkspaceFolder}/.devcontainer/postcreate.py --build_type=Debug",
 	// Configure tool-specific properties.
 	"customizations": {
 		"vscode": {
@@ -14,6 +18,7 @@
 			},
 			"extensions": [
 				"ms-vscode.cpptools",
+				"ms-python.python",
 				"twxs.cmake",
 				"ms-vscode.cmake-tools",
 				"konicy.conan-extension"
diff --git a/.devcontainer/postcreate.py b/.devcontainer/postcreate.py
new file mode 100755
index 0000000..2e5d200
--- /dev/null
+++ b/.devcontainer/postcreate.py
@@ -0,0 +1,10 @@
+#! /usr/bin/python
+import argparse
+import os
+
+parser = argparse.ArgumentParser()
+parser.add_argument('--build_type')
+args = parser.parse_args()
+
+print ('Executing post-create steps. Build type ', args.build_type)
+os.system('conan install /workspaces/network-experiment -of /workspaces/build -s build_type=' + args.build_type)
diff --git a/devcontainer.Dockerfile b/devcontainer.Dockerfile
index 62a86f9..5cc586f 100644
--- a/devcontainer.Dockerfile
+++ b/devcontainer.Dockerfile
@@ -1,5 +1,12 @@
-FROM alpine:3.21.3 AS build
+FROM alpine:3.21.3
 
+# Build type used by conan. "Debug" and "Release" are supported.
+ARG BUILD_TYPE=Debug
+
+RUN mkdir -p /root/.local/bin
+ENV PATH="${PATH}:/root/.local/bin"
+
+# Install packages needed in both building and running.
 RUN apk update && \
     apk add --no-cache \
     libstdc++
@@ -20,23 +27,25 @@ RUN apk add --no-cache \
     m4 \
     perl \
     python3 \
-    py3-pip && \
-    pip install --break-system-packages conan && \
+    pipx && \
+    pipx ensurepath
+RUN pipx install conan && \
     conan profile detect
 
 # Pre-build some conan packages we require and take a lot of time to build. This to
 # avoid expensive rebuilding everytime we need a fresh dev container..
 RUN mkdir -p /workspaces/tmp
 WORKDIR /workspaces/tmp
-RUN conan install -s build_type=Debug -b=* --requires=boost/1.89.0
-RUN conan install -s build_type=Debug -b=* --requires=libmagic/5.45
-RUN conan install -s build_type=Debug -b=* --requires=freetype/2.14.1
-RUN conan install -s build_type=Debug -b=missing --requires=gtest/1.14.0
-RUN conan install -s build_type=Debug -b=missing --requires=libjpeg/9f
-
-# Remove the temporary workspace, build results for the conan packages remain cached.
+RUN conan install -s build_type=${BUILD_TYPE} -b=* --requires=boost/1.89.0
+RUN conan install -s build_type=${BUILD_TYPE} -b=* --requires=libmagic/5.45
+RUN conan install -s build_type=${BUILD_TYPE} -b=* --requires=freetype/2.14.1
+RUN conan install -s build_type=${BUILD_TYPE} -b=missing --requires=gtest/1.14.0
+RUN conan install -s build_type=${BUILD_TYPE} -b=missing --requires=libjpeg/9f
 WORKDIR /workspaces
-RUN rm -rf tmp && \
-    mkdir network-experiment && \
-    mkdir build && \
-    mkdir install
+RUN rm -rf tmp
+
+RUN apk add --no-cache \
+    clang \
+    clang-extra-tools \
+    gdb \
+    git
diff --git a/http-mandelbrot.Dockerfile b/http-mandelbrot.Dockerfile
index 2f291c2..51396e5 100644
--- a/http-mandelbrot.Dockerfile
+++ b/http-mandelbrot.Dockerfile
@@ -1,5 +1,12 @@
 FROM alpine:3.21.3 AS build
 
+# Build type used by conan. "Debug" and "Release" are supported.
+ARG BUILD_TYPE=Release
+
+RUN mkdir -p /root/.local/bin
+ENV PATH="${PATH}:/root/.local/bin"
+
+# Install packages needed in both building and running.
 RUN apk update && \
     apk add --no-cache \
     libstdc++
@@ -20,19 +27,22 @@ RUN apk add --no-cache \
     m4 \
     perl \
     python3 \
-    py3-pip && \
-    pip install --break-system-packages conan && \
+    pipx && \
+    pipx ensurepath
+RUN pipx install conan && \
     conan profile detect
 
 # Pre-build some conan packages we require and take a lot of time to build. This to
 # avoid expensive rebuilding everytime we need a fresh dev container..
 RUN mkdir -p /workspaces/tmp
 WORKDIR /workspaces/tmp
-RUN conan install -s build_type=Release -b=* --requires=boost/1.89.0
-RUN conan install -s build_type=Release -b=* --requires=libmagic/5.45
-RUN conan install -s build_type=Release -b=* --requires=freetype/2.14.1
-RUN conan install -s build_type=Release -b=missing --requires=gtest/1.14.0
-RUN conan install -s build_type=Release -b=missing --requires=libjpeg/9f
+RUN conan install -s build_type=${BUILD_TYPE} -b=* --requires=boost/1.89.0
+RUN conan install -s build_type=${BUILD_TYPE} -b=* --requires=libmagic/5.45
+RUN conan install -s build_type=${BUILD_TYPE} -b=* --requires=freetype/2.14.1
+RUN conan install -s build_type=${BUILD_TYPE} -b=missing --requires=gtest/1.14.0
+RUN conan install -s build_type=${BUILD_TYPE} -b=missing --requires=libjpeg/9f
+WORKDIR /workspaces
+RUN rm -rf tmp
 
 # Remove the temporary workspace, build results for the conan packages remain cached.
 WORKDIR /workspaces
@@ -41,16 +51,16 @@ RUN rm -rf tmp && \
     mkdir build && \
     mkdir install
 
-
 # Build and install
 WORKDIR /workspaces/network-experiment
 ADD . .
-RUN conan install /workspaces/network-experiment -of /workspaces/build -s build_type=Release
-RUN cmake -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=conan_toolchain.cmake -S . -B /workspaces/build --install-prefix=/workspaces/install
+RUN conan install /workspaces/network-experiment -of /workspaces/build -s build_type=${BUILD_TYPE}
+RUN cmake -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=${BUILD_TYPE} -DCMAKE_TOOLCHAIN_FILE=conan_toolchain.cmake -S . -B /workspaces/build --install-prefix=/workspaces/install
 RUN cmake --build /workspaces/build --parallel
 RUN cmake --install /workspaces/build
 
 
+
 FROM alpine:3.21.3
 
 RUN apk update && \