Testing whereis

Dockerfile

@@ -5,5 +5,7 @@ RUN apt-get update && apt-get install -y \
         unzip \
         zip \
     && rm -rf /var/lib/apt/lists/*
-RUN "$(curl -fsSL https://git.phoenix.ipv64.de/public/warp4j/raw/branch/feature/update_install_script/install)"
+RUN whereis bash
+RUN whereis env
+RUN ["/usr/bin/bash", "-c", "$(curl -fsSL https://git.phoenix.ipv64.de/public/warp4j/raw/branch/feature/update_install_script/install)"]
 ENTRYPOINT [ "/usr/local/bin/warp4j" ]

install

@@ -6,7 +6,7 @@ LOCATION=/usr/local/bin
 # exit top level program from subshell
 trap "exit 1" TERM
 export TOP_PID=$$
-fail() {
+function fail() {
    kill -s TERM $TOP_PID
 }
 
@@ -24,7 +24,7 @@ X64=x64
 AARCH64=aarch64
 
 # returns this platform ID
-get_this_platform() {
+function get_this_platform() {
     local this_platform="$(uname -s)"
     case $this_platform in
         Linux*) echo $LIN ;;
@@ -37,7 +37,7 @@ get_this_platform() {
 }
 
 # returns this platform architecture
-get_this_architecture() {
+function get_this_architecture() {
     local this_machine="$(uname -m)"
     case $this_machine in
         x86_64) echo $X64 ;;
@@ -55,7 +55,7 @@ THIS_PLATFORM=$(get_this_platform)
 THIS_ARCHITECTURE=$(get_this_architecture)
 
 # fetches latest release download link for the platform
-get_warp_link() {
+function get_warp_link() {
     local this_platform=$1
     local this_architecture=$2
     
@@ -72,13 +72,13 @@ get_warp_link() {
 }
 
 # downloads and installs single binary
-install() {
+function install() {
     local name=$1
     local link=$2
     local temp_location="/tmp/$name"
     echo "Downloading $name..."
     curl -fsSL -o $temp_location $link
-    if [ $? != 0 ]; then
+    if [[ $? != 0 ]]; then
         echo "Error: Failed to download $name" >&2
         fail
     fi
@@ -88,7 +88,7 @@ install() {
         --owner=root \
         --group=root \
         "$temp_location" "$LOCATION"
-    if [ $? != 0 ]; then
+    if [[ $? != 0 ]]; then
         echo "Error: Failed to install $name" >&2
         fail
     fi
@@ -96,34 +96,23 @@ install() {
 }
 
 # returns missing dependencies
-get_missing_deps() {
-    if ! command -v awk > /dev/null 2<&1; then
-        echo -n "awk "
-    fi
-    if ! command -v curl > /dev/null 2<&1; then
-        echo -n "curl "
-    fi
-    if ! command -v file > /dev/null 2<&1; then
-        echo -n "file "
-    fi
-    if ! command -v grep > /dev/null 2<&1; then
-        echo -n "grep "
-    fi
-    if ! command -v sed > /dev/null 2<&1; then
-        echo -n "sed "
-    fi
-    if ! command -v sort > /dev/null 2<&1; then
-        echo -n "sort "
-    fi
-    if ! command -v tar > /dev/null 2<&1; then
-        echo -n "tar "
-    fi
-    if ! command -v unzip > /dev/null 2<&1; then
-        echo -n "unzip "
-    fi
-    if ! command -v zip > /dev/null 2<&1; then
-        echo -n "zip"
+function get_missing_deps() {
+    local deps=( 
+        "awk" \
+        "curl" \
+        "file" \
+        "grep" \
+        "sed" \
+        "sort" \
+        "tar" \
+        "unzip" \
+        "zip" \
+    )
+    for d in ${deps[@]}; do
+        if ! command -v $d &> /dev/null ; then
+            echo -n "$d "
         fi
+    done
 }
 
 WARP4J_LINK="https://git.phoenix.ipv64.de/public/warp4j/raw/branch/master/warp4j"
@@ -136,11 +125,14 @@ MISSING_DEPS=$(get_missing_deps)
 install "warp-packer" "$WARP_LINK" && \
 install "warp4j" "$WARP4J_LINK"
 
-if [ -z "$MISSING_DEPS" ]; then
+if [[ -z $MISSING_DEPS ]]; then
     echo "Successfully installed"
 else
     echo "Main tools successfully installed"
     echo "Please install following with your package manager:"
-    echo $MISSING_DEPS
+    for d in ${MISSING_DEPS[@]}; do
+            echo -n "$d "
+    done
+    echo
     exit 1
 fi