diff --git a/src/linux/Dockerfile-fedora b/src/linux/Dockerfile-fedora
index a37bfcb4c4..11895c0d7f 100644
--- a/src/linux/Dockerfile-fedora
+++ b/src/linux/Dockerfile-fedora
@@ -37,7 +37,7 @@ RUN export MAKEFLAGS="-j$(nproc)" && \
 
 # Install node and npm to build vite frontend
 RUN curl -fsSL https://rpm.nodesource.com/setup_20.x | bash - && \
-    dnf install -y --setopt=install_weak_deps=False nodejs
+dnf install -y --setopt=install_weak_deps=False nodejs
 
 # Copy files
 # can't exclude deps from . so we are copying everything by hand
diff --git a/src/linux/Dockerfile-rhel b/src/linux/Dockerfile-rhel
index c9baa3c18b..cb36d6c3d1 100644
--- a/src/linux/Dockerfile-rhel
+++ b/src/linux/Dockerfile-rhel
@@ -48,7 +48,7 @@ RUN export MAKEFLAGS="-j$(nproc)" && \
 
 # Install node and npm to build vite frontend
 RUN curl -fsSL https://rpm.nodesource.com/setup_20.x | bash - && \
-    dnf install -y --setopt=install_weak_deps=False nodejs
+  dnf install -y --setopt=install_weak_deps=False nodejs
 
 # Copy files
 # can't exclude deps from . so we are copying everything by hand
diff --git a/src/linux/Dockerfile-rhel9 b/src/linux/Dockerfile-rhel9
index 223563b1d9..f56d31b5d6 100644
--- a/src/linux/Dockerfile-rhel9
+++ b/src/linux/Dockerfile-rhel9
@@ -51,7 +51,7 @@ RUN export MAKEFLAGS="-j$(nproc)" && \
 
 # Install node and npm to build vite frontend
 RUN curl -fsSL https://rpm.nodesource.com/setup_20.x | bash - && \
-    dnf install -y --setopt=install_weak_deps=False nodejs
+  dnf install -y --setopt=install_weak_deps=False nodejs
 
 # Copy files
 # can't exclude deps from . so we are copying everything by hand
diff --git a/src/ui/client/build.py b/src/ui/client/build.py
index ada7060eb2..3721c702e5 100644
--- a/src/ui/client/build.py
+++ b/src/ui/client/build.py
@@ -46,16 +46,16 @@ def run_command(command: List[str]) -> int:
     """Utils to run a subprocess command. This is usefull to run npm commands to build vite project"""
     print(f"Running command: {command}", flush=True)
     try:
-        process = Popen(command, stdout=PIPE, stderr=PIPE, cwd=current_directory.as_posix(), shell=not bool(getenv("DOCKERFILE", "")), text=True)
+        process = Popen(command, stdout=PIPE, stderr=PIPE, cwd=current_directory.as_posix(), shell=not bool(getenv("DOCKERFILE", "")))
         while process.poll() is None:
             if process.stdout is not None:
                 for line in process.stdout:
-                    print(line.strip(), flush=True)
+                    print(line.decode("utf-8").strip(), flush=True)
 
         if process.returncode != 0:
             print("Error while running command", flush=True)
-            print(process.stdout.read(), flush=True)
-            print(process.stderr.read(), flush=True)
+            print(process.stdout.read().decode("utf-8"), flush=True)
+            print(process.stderr.read().decode("utf-8"), flush=True)
             return 1
     except BaseException as e:
         print(f"Error while running command: {e}", flush=True)