diff --git a/scripts/_common.sh b/scripts/_common.sh
index 5fe21e6..c112a06 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -8,6 +8,49 @@ export nodejs_version="18"
 #=================================================
 # PERSONAL HELPERS
 #=================================================
+function build_backend
+{
+	ynh_script_progression --message="Building crabfit backend..." --weight=1
+
+	# The cargo version packaged with debian (currently 11) is too old and results in errors..
+	# Thus the latest version is manually installed alongside the application for the moment
+	pushd $install_dir/api
+		# The API port is currently hard-coded instead of being in a .env
+		# TODO: MR to the upstream
+		# In the meantime, lets do some sed!
+		sed -i "s/3000/$port_api/g" src/main.rs
+
+		curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs > rustup.sh
+		ynh_exec_warn_less ynh_exec_as "$app" \
+			RUSTUP_HOME=$install_dir/api/.rustup \
+			CARGO_HOME=$install_dir/api/.cargo \
+			sh rustup.sh -y -q --no-modify-path --default-toolchain=stable
+		export PATH="$PATH:$install_dir/.cargo/bin"
+		ynh_exec_warn_less ynh_exec_as "$app" \
+			RUSTUP_HOME=$install_dir/api/.rustup \
+			CARGO_HOME=$install_dir/api/.cargo \
+			$install_dir/api/.cargo/bin/cargo build --release --features sql-adaptor
+
+		# Remove build files and rustup
+		ynh_secure_remove --file="$install_dir/api/.cargo"
+		ynh_secure_remove --file="$install_dir/api/.rustup"
+	popd
+}
+
+function build_frontend
+{
+	ynh_script_progression --message="Building crabfit frontend..." --weight=1
+	pushd $install_dir/frontend
+		# Paths are currently absolute, which breaks having a /api/ path prefix
+		# TODO: MR to the upstream
+		sed -i "s/\/event/event/g" $install_dir/frontend/src/config/api.ts
+		sed -i "s/\/stats/stats/g" $install_dir/frontend/src/config/api.ts
+
+		ynh_exec_warn_less env "$ynh_node_load_PATH" $nodejs_path/corepack enable
+		ynh_exec_warn_less ynh_exec_as "$app" env "$ynh_node_load_PATH" $nodejs_path/yarn install --production --frozen-lockfile
+		ynh_exec_warn_less ynh_exec_as "$app" env "$ynh_node_load_PATH" $ynh_npm run build
+	popd
+}
 
 #=================================================
 # EXPERIMENTAL HELPERS
diff --git a/scripts/install b/scripts/install
index 1b03530..ada5e8e 100755
--- a/scripts/install
+++ b/scripts/install
@@ -59,46 +59,12 @@ chown $app:$app "$install_dir/api/.env"
 #=================================================
 # BUILD BACKEND
 #=================================================
-ynh_script_progression --message="Building crabfit backend..." --weight=1
-
-# The cargo version packaged with debian (currently 11) is too old and results in errors..
-# Thus the latest version is manually installed alongside the application for the moment
-pushd $install_dir/api
-	# The API port is currently hard-coded instead of being in a .env
-	# TODO: MR to the upstream
-	# In the meantime, lets do some sed!
-	sed -i "s/3000/$port_api/g" src/main.rs
-
-	curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs > rustup.sh
-	ynh_exec_warn_less ynh_exec_as "$app" \
-		RUSTUP_HOME=$install_dir/api/.rustup \
-		CARGO_HOME=$install_dir/api/.cargo \
-		sh rustup.sh -y -q --no-modify-path --default-toolchain=stable
-	export PATH="$PATH:$install_dir/.cargo/bin"
-	ynh_exec_warn_less ynh_exec_as "$app" \
-		RUSTUP_HOME=$install_dir/api/.rustup \
-		CARGO_HOME=$install_dir/api/.cargo \
-		$install_dir/api/.cargo/bin/cargo build --release --features sql-adaptor
-
-	# Remove build files and rustup
-	ynh_secure_remove --file="$install_dir/api/.cargo"
-	ynh_secure_remove --file="$install_dir/api/.rustup"
-popd
+build_backend
 
 #=================================================
 # BUILD FRONTEND
 #=================================================
-ynh_script_progression --message="Building crabfit frontend..." --weight=1
-pushd $install_dir/frontend
-	# Paths are currently absolute, which breaks having a /api/ path prefix
-	# TODO: MR to the upstream
-	sed -i "s/\/event/event/g" $install_dir/frontend/src/config/api.ts
-	sed -i "s/\/stats/stats/g" $install_dir/frontend/src/config/api.ts
-
-	ynh_exec_warn_less env "$ynh_node_load_PATH" $nodejs_path/corepack enable
-	ynh_exec_warn_less ynh_exec_as "$app" env "$ynh_node_load_PATH" $nodejs_path/yarn install --production --frozen-lockfile
-	ynh_exec_warn_less ynh_exec_as "$app" env "$ynh_node_load_PATH" $ynh_npm run build
-popd
+build_frontend
 
 #=================================================
 # GENERIC FINALIZATION
diff --git a/scripts/upgrade b/scripts/upgrade
index 9c5d780..ee36008 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -134,38 +134,12 @@ chown $app:$app "$install_dir/api/.env"
 #=================================================
 # BUILD BACKEND
 #=================================================
-ynh_script_progression --message="Building crabfit backend..." --weight=1
-
-# The cargo version packaged with debian (currently 11) is too old and results in errors..
-# Thus the latest version is manually installed alongside the application for the moment
-pushd $install_dir/api
-	curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs > rustup.sh
-	ynh_exec_warn_less ynh_exec_as "$app" \
-		RUSTUP_HOME=$install_dir/api/.rustup \
-		CARGO_HOME=$install_dir/api/.cargo \
-		sh rustup.sh -y -q --no-modify-path --default-toolchain=stable
-	export PATH="$PATH:$install_dir/.cargo/bin"
-	ynh_exec_warn_less ynh_exec_as "$app" \
-		RUSTUP_HOME=$install_dir/api/.rustup \
-		CARGO_HOME=$install_dir/api/.cargo \
-		$install_dir/api/.cargo/bin/cargo build --release #--features sql-adaptor
-
-	# Remove build files and rustup
-# 	cp -af "$install_dir/api/target/release/crabfit-api" "$install_dir/api/api"
-# 	ynh_secure_remove --file="$final_path/build"
-	ynh_secure_remove --file="$install_dir/api/.cargo"
-	ynh_secure_remove --file="$install_dir/api/.rustup"
-popd
+build_backend
 
 #=================================================
 # BUILD FRONTEND
 #=================================================
-ynh_script_progression --message="Building crabfit frontend..." --weight=1
-pushd $install_dir/frontend
-	ynh_use_nodejs
-	ynh_exec_warn_less ynh_exec_as "$app" env "$ynh_node_load_PATH" $nodejs_path/yarn install --production --frozen-lockfile
-	ynh_exec_warn_less ynh_exec_as "$app" env "$ynh_node_load_PATH" $ynh_npm run build
-popd
+build_frontend
 
 #=================================================
 # START SYSTEMD SERVICE