diff --git a/.github/workflows/appimage10.yml b/.github/workflows/appimage10.yml
index 09bf750e..3f5ffb4d 100644
--- a/.github/workflows/appimage10.yml
+++ b/.github/workflows/appimage10.yml
@@ -96,7 +96,7 @@ jobs:
               tcl_ref="$TCL_REF_INPUT"
               echo "Using workflow_dispatch TCL ref: $tcl_ref"
             else
-              tcl_ref=$(git ls-remote --tags --refs https://github.com/tcltk/tcl.git "refs/tags/${TCL_TAG_GLOB}"                 | awk '{print $2}' | sed 's#refs/tags/##' | sort -V | tail -1)
+              tcl_ref=$(git ls-remote --tags --refs https://github.com/tcltk/tcl.git "refs/tags/${TCL_TAG_GLOB}" | awk '{print $2}' | sed 's#refs/tags/##' | sort -V | tail -1)
               test -n "$tcl_ref"
               echo "Auto-resolved latest Tcl ref: $tcl_ref"
             fi
diff --git a/.github/workflows/appimage7.yml b/.github/workflows/appimage7.yml
index 0a01f292..4ab1574c 100644
--- a/.github/workflows/appimage7.yml
+++ b/.github/workflows/appimage7.yml
@@ -96,7 +96,7 @@ jobs:
               tcl_ref="$TCL_REF_INPUT"
               echo "Using workflow_dispatch TCL ref: $tcl_ref"
             else
-              tcl_ref=$(git ls-remote --tags --refs https://github.com/tcltk/tcl.git "refs/tags/${TCL_TAG_GLOB}"                 | awk '{print $2}' | sed 's#refs/tags/##' | sort -V | tail -1)
+              tcl_ref=$(git ls-remote --tags --refs https://github.com/tcltk/tcl.git "refs/tags/${TCL_TAG_GLOB}" | awk '{print $2}' | sed 's#refs/tags/##' | sort -V | tail -1)
               test -n "$tcl_ref"
               echo "Auto-resolved latest Tcl ref: $tcl_ref"
             fi
diff --git a/.github/workflows/appimage8.yml b/.github/workflows/appimage8.yml
index ea440227..e69d0502 100644
--- a/.github/workflows/appimage8.yml
+++ b/.github/workflows/appimage8.yml
@@ -96,7 +96,7 @@ jobs:
               tcl_ref="$TCL_REF_INPUT"
               echo "Using workflow_dispatch TCL ref: $tcl_ref"
             else
-              tcl_ref=$(git ls-remote --tags --refs https://github.com/tcltk/tcl.git "refs/tags/${TCL_TAG_GLOB}"                 | awk '{print $2}' | sed 's#refs/tags/##' | sort -V | tail -1)
+              tcl_ref=$(git ls-remote --tags --refs https://github.com/tcltk/tcl.git "refs/tags/${TCL_TAG_GLOB}" | awk '{print $2}' | sed 's#refs/tags/##' | sort -V | tail -1)
               test -n "$tcl_ref"
               echo "Auto-resolved latest Tcl ref: $tcl_ref"
             fi
diff --git a/.github/workflows/appimage9.yml b/.github/workflows/appimage9.yml
index 01e13030..3e799290 100644
--- a/.github/workflows/appimage9.yml
+++ b/.github/workflows/appimage9.yml
@@ -96,7 +96,7 @@ jobs:
               tcl_ref="$TCL_REF_INPUT"
               echo "Using workflow_dispatch TCL ref: $tcl_ref"
             else
-              tcl_ref=$(git ls-remote --tags --refs https://github.com/tcltk/tcl.git "refs/tags/${TCL_TAG_GLOB}"                 | awk '{print $2}' | sed 's#refs/tags/##' | sort -V | tail -1)
+              tcl_ref=$(git ls-remote --tags --refs https://github.com/tcltk/tcl.git "refs/tags/${TCL_TAG_GLOB}" | awk '{print $2}' | sed 's#refs/tags/##' | sort -V | tail -1)
               test -n "$tcl_ref"
               echo "Auto-resolved latest Tcl ref: $tcl_ref"
             fi
diff --git a/appimage/10/Dockerfile b/appimage/10/Dockerfile
index b69db87e..14aed357 100644
--- a/appimage/10/Dockerfile
+++ b/appimage/10/Dockerfile
@@ -2,7 +2,7 @@ FROM almalinux:10
 
 USER root
 
-ARG TCL_SOURCE=tarball
+ARG TCL_SOURCE=github
 ARG TCL_VERSION=9.0.4
 ARG TCL_REF=core-9-0-4
 ARG TCL_TARBALL_URL=https://codeload.github.com/tcltk/tcl/tar.gz/refs/tags/core-9-0-4
@@ -17,7 +17,6 @@ RUN dnf install -y python3 zlib-devel ncurses-devel readline-devel cairo-devel f
     && echo "### rpm -qa:" \
     && rpm -qa | sort \
     && echo ""
-#RUN dnf group install -y "Development Tools"
 
 # Tcl/Tk
 WORKDIR /tcl
diff --git a/appimage/7/Dockerfile b/appimage/7/Dockerfile
index 5b71ee19..4a245bd6 100644
--- a/appimage/7/Dockerfile
+++ b/appimage/7/Dockerfile
@@ -26,7 +26,6 @@ RUN yum install -y cairo-devel freeglut-devel gcc make git tcsh \
     && echo "### rpm -qa:" \
     && rpm -qa | sort \
     && echo ""
-#RUN dnf group install -y "Development Tools"
 
 # Tcl/Tk
 WORKDIR /tcl
diff --git a/appimage/8/Dockerfile b/appimage/8/Dockerfile
index cf286bfd..e4909e56 100644
--- a/appimage/8/Dockerfile
+++ b/appimage/8/Dockerfile
@@ -2,7 +2,7 @@ FROM almalinux:8
 
 USER root
 
-ARG TCL_SOURCE=tarball
+ARG TCL_SOURCE=github
 ARG TCL_VERSION=8.6.18
 ARG TCL_REF=core-8-6-18
 ARG TCL_TARBALL_URL=https://codeload.github.com/tcltk/tcl/tar.gz/refs/tags/core-8-6-18
@@ -16,7 +16,6 @@ RUN dnf install -y python311 zlib-devel ncurses-devel readline-devel cairo-devel
     && echo "### rpm -qa:" \
     && rpm -qa | sort \
     && echo ""
-#RUN dnf group install -y "Development Tools"
 
 # Tcl/Tk
 WORKDIR /tcl
diff --git a/appimage/9/Dockerfile b/appimage/9/Dockerfile
index 527e2bed..925b8a7b 100644
--- a/appimage/9/Dockerfile
+++ b/appimage/9/Dockerfile
@@ -17,7 +17,6 @@ RUN dnf install -y python311 zlib-devel ncurses-devel readline-devel cairo-devel
     && echo "### rpm -qa:" \
     && rpm -qa | sort \
     && echo ""
-#RUN dnf group install -y "Development Tools"
 
 # Tcl/Tk
 WORKDIR /tcl