diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5ffe89c..04cd15e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -19,7 +19,7 @@ jobs:
           sudo docker image prune --all --force
           sudo rm -rf /home/linuxbrew
           sudo apt-get remove -y --purge fonts-noto-color-emoji subversion \
-              sshpass g++ gcc gnupg2 imagemagick jq libmagic-dev ssh \
+              sshpass g++ gcc gnupg2 imagemagick jq libmagic-dev \
               libmagickcore-dev	libmagickwand-dev	libssl-dev \
               mercurial openssh-client p7zip-full	ftp bison
           sudo apt-get autoremove -y
diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 00658c8..9ea635b 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -9,6 +9,9 @@ jobs:
       - name: "Checkout"
         uses: actions/checkout@v3
 
-      - name: "Lint SPEC files"
+      - name: "Lint"
         run: |
-          docker run -v "$PWD":/repo fedora:38 /bin/bash -c "/repo/lint.sh"
\ No newline at end of file
+          docker run \
+            -v "$PWD":/repo \
+            ghcr.io/t2linux/fedora-dev:latest \
+            /repo/lint.sh
diff --git a/build-packages.sh b/build-packages.sh
index d17ca16..cf23815 100755
--- a/build-packages.sh
+++ b/build-packages.sh
@@ -4,15 +4,15 @@ source /repo/util.sh
 if [[ -z "$1" ]]; then
     packages=""
     echo "Available packages: t2linux-config, t2linux-repo, t2linux-config, or kernel"
-    read -p "What package(s) do you want to build: " -a packages 
+    read -r -p "What package(s) do you want to build: " -a packages 
 else
     packages=( "$@" )
 fi
 
-for current_package in ${packages[@]}; do
+for current_package in "${packages[@]}"; do
     if [ "$current_package" == "kernel" ]; then
         /repo/kernel/kernel.sh
     fi
-    cd /repo/$current_package
-    build_package $current_package.spec
+    cd /repo/"$current_package" || echo "ERROR: Package $current_package not found"
+    build_package "$current_package".spec
 done
diff --git a/generate-dnf-repo.sh b/generate-dnf-repo.sh
index 2381596..16f5ba7 100755
--- a/generate-dnf-repo.sh
+++ b/generate-dnf-repo.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/bash
 
-cd /repo
-mkdir ./dnf-repo && cd ./dnf-repo
+cd /repo || exit 1
+mkdir ./dnf-repo && cd ./dnf-repo || exit 2
 cp /repo/_output/*.rpm .
-rm *.src.rpm
+rm ./*.src.rpm
 createrepo .
diff --git a/lint.sh b/lint.sh
index 90a3ef1..407a44a 100755
--- a/lint.sh
+++ b/lint.sh
@@ -2,9 +2,8 @@
 
 set -e
 
-dnf install -y rpmlint
+for i in /repo/*/*.spec; do
+  rpmlint "$i"
+done
 
-for i in /repo/*/*.spec
-do
-  rpmlint $i
-done
\ No newline at end of file
+shellcheck /repo/**.sh
diff --git a/sign-packages.sh b/sign-packages.sh
index 7f3eb83..45586b4 100755
--- a/sign-packages.sh
+++ b/sign-packages.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/bash
 source /repo/util.sh
 
-cd /repo/_output
-sign_packages $RPM_SIGNING_PRIVATE_KEY_B64 "T2Linux Fedora"
+cd /repo/_output || exit 2
+sign_packages "$RPM_SIGNING_PRIVATE_KEY_B64" "T2Linux Fedora"
diff --git a/util.sh b/util.sh
index 217e82a..b7b7926 100755
--- a/util.sh
+++ b/util.sh
@@ -1,21 +1,22 @@
 #!/usr/bin/bash
 
 build_package() {
-    spectool -g $1
-    mock --buildsrpm --spec $1 --sources . --resultdir /repo/_output
+    spectool -g "$1"
+    mkdir -p /repo/_output
+    mock --buildsrpm --spec "$1" --sources . --resultdir /repo/_output
     mock --rebuild /repo/_output/*.src.rpm --resultdir /repo/_output
 }
 
 download_koji_sources() {
     # Takes full koji build name as input
-    koji download-build --arch=src $1
-    rpmdev-extract $1.src.rpm
-    mv -n $1.src/* .
-    rm -r $1.src $1.src.rpm
+    koji download-build --arch=src "$1"
+    rpmdev-extract "$1".src.rpm
+    mv -n "$1".src/* .
+    rm -r "$1".src "$1".src.rpm
 }
 
 sign_packages() {
-    echo $1 | base64 -d | gpg --import
+    echo "$1" | base64 -d | gpg --import
     echo -e "%_signature gpg\n%_gpg_name $2" > ~/.rpmmacros
-    rpm --addsign *.rpm
+    rpm --addsign ./*.rpm
 }