diff --git a/.containerignore b/.containerignore
new file mode 100644
index 0000000..1da3f29
--- /dev/null
+++ b/.containerignore
@@ -0,0 +1,14 @@
+build/
+
+.git/
+.github/
+.gitignore
+
+.vscode/
+.idea/
+
+.containerignore
+Containerfile
+
+.clang*
+*.py
diff --git a/containers/Containerfile.debian b/containers/Containerfile.debian
index a665e07..77ebfe3 100644
--- a/containers/Containerfile.debian
+++ b/containers/Containerfile.debian
@@ -1,9 +1,24 @@
+FROM debian:12 AS builder
+
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    cmake
+
+WORKDIR /app
+COPY . .
+
+RUN mkdir build && cd build && \
+    cmake .. && \
+    make -j$(nproc) && \
+    cpack -G DEB
+
 FROM debian:12
 
 RUN apt-get update && apt-get install -y man man-db less
 
-COPY ../build/out/*.deb .
-RUN dpkg -i $(ls *.deb | head -n1) && rm -f ./*.deb
+COPY --from=builder /app/build/out/*.deb /tmp/
+
+RUN dpkg -i /tmp/*.deb && rm -rf /tmp/*.deb
 
 RUN groupadd unprivileged-group && \
     useradd -g unprivileged-group -N -m unprivileged-user
diff --git a/containers/Containerfile.fedora b/containers/Containerfile.fedora
index 414c380..71e75dd 100644
--- a/containers/Containerfile.fedora
+++ b/containers/Containerfile.fedora
@@ -1,9 +1,27 @@
+FROM fedora:42 AS builder
+
+RUN dnf install -y \
+    gcc-c++ \
+    cmake \
+    make \
+    rpm-build
+
+WORKDIR /app
+COPY . .
+
+RUN mkdir build && cd build && \
+    cmake .. && \
+    make -j$(nproc) && \
+    cpack -G RPM
+
 FROM fedora:42
 
 RUN dnf install -y man man-pages man-db less --setopt='tsflags='
 
-COPY ../build/out/*.rpm .
-RUN dnf install -y $(ls *.rpm | head -n1) --setopt='tsflags=' && rm -rf ./*.rpm
+COPY --from=builder /app/build/out/*.rpm /tmp/
+
+RUN dnf install -y /tmp/*.rpm --setopt='tsflags=' && \
+    rm -rf /tmp/*.rpm
 
 RUN groupadd unprivileged-group && \
     useradd -g unprivileged-group -N -m unprivileged-user
diff --git a/src/prngs/mersenne_twister.cpp b/src/prngs/mersenne_twister.cpp
index 8be28f0..1d0594f 100644
--- a/src/prngs/mersenne_twister.cpp
+++ b/src/prngs/mersenne_twister.cpp
@@ -1,5 +1,6 @@
 #include "mersenne_twister.hpp"
 #include "prng.hpp"
+#include <cstddef>
 #include <cstdint>
 #include <limits>
 #include <vector>