diff --git a/Dockerfile.dev b/Dockerfile.dev
index efe6904..5c7df74 100644
--- a/Dockerfile.dev
+++ b/Dockerfile.dev
@@ -32,6 +32,12 @@ RUN /tmp/docker-install-phase5.bash
 COPY scripts/docker-install-phase6.bash /tmp/
 RUN /tmp/docker-install-phase6.bash "$UID"
 
+COPY scripts/docker-install-phase7.bash /tmp/
+RUN /tmp/docker-install-phase7.bash "$UID"
+
+COPY scripts/docker-install-phase8.bash /tmp/
+RUN /tmp/docker-install-phase8.bash "$UID"
+
 USER docker
 WORKDIR /home/docker
 RUN chmod go-rwx /home/docker
diff --git a/Dockerfile.prod b/Dockerfile.prod
index a69919d..38f0854 100644
--- a/Dockerfile.prod
+++ b/Dockerfile.prod
@@ -34,6 +34,12 @@ RUN /tmp/docker-install-phase5.bash
 COPY scripts/docker-install-phase6.bash /tmp/
 RUN /tmp/docker-install-phase6.bash
 
+COPY scripts/docker-install-phase7.bash /tmp/
+RUN /tmp/docker-install-phase7.bash "$UID"
+
+COPY scripts/docker-install-phase8.bash /tmp/
+RUN /tmp/docker-install-phase8.bash "$UID"
+
 USER docker
 WORKDIR /home/docker
 RUN chmod go-rwx /home/docker
diff --git a/backend/src/langs.ts b/backend/src/langs.ts
index 6193c94..c6cb5c4 100644
--- a/backend/src/langs.ts
+++ b/backend/src/langs.ts
@@ -321,6 +321,7 @@ void main() {
     repl: "iex",
     main: "main.exs",
     run: "iex main.exs",
+    lsp: "/opt/elixir-ls/language_server.sh",
     template: `IO.puts("Hello, world!")
 `,
   },
diff --git a/scripts/docker-install-phase1.bash b/scripts/docker-install-phase1.bash
index 5f47de2..61f4e24 100755
--- a/scripts/docker-install-phase1.bash
+++ b/scripts/docker-install-phase1.bash
@@ -3,6 +3,7 @@
 set -e
 set -o pipefail
 set -x
+pushd /tmp >/dev/null
 
 dpkg --add-architecture i386
 
@@ -17,7 +18,6 @@ curl -sSL https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
 curl -sSL https://keybase.io/crystal/pgp_keys.asc | apt-key add -
 apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
 
-cd /tmp
 wget https://packages.microsoft.com/config/ubuntu/20.04/packages-microsoft-prod.deb
 dpkg -i packages-microsoft-prod.deb
 rm packages-microsoft-prod.deb
@@ -33,4 +33,5 @@ EOF
 
 add-apt-repository -y -n ppa:deadsnakes/ppa
 
+popd >/dev/null
 rm "$0"
diff --git a/scripts/docker-install-phase4.bash b/scripts/docker-install-phase4.bash
index 985a13b..21448f8 100755
--- a/scripts/docker-install-phase4.bash
+++ b/scripts/docker-install-phase4.bash
@@ -4,15 +4,16 @@ set -e
 set -o pipefail
 set -x
 
-# Needed for project infrastructure
-cd /tmp
+# Package manager - Julia
 mkdir /opt/julia
 export JULIA_DEPOT_PATH=/opt/julia
 
+# Package manager - Node.js
 npm config set unsafe-perm true
 PERL_MM_USE_DEFAULT=1 cpan App::cpanminus
 rm -rf /tmp/cpan_install_*.txt
 
+# Package manager - Rust
 export CARGO_HOME=/opt/rust
 export RUSTUP_HOME=/opt/rust
 curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --no-modify-path
diff --git a/scripts/docker-install-phase5.bash b/scripts/docker-install-phase5.bash
index 0b5986f..1716cda 100755
--- a/scripts/docker-install-phase5.bash
+++ b/scripts/docker-install-phase5.bash
@@ -3,26 +3,18 @@
 set -e
 set -o pipefail
 set -x
+pushd /tmp >/dev/null
 
 # Needed for project infrastructure
-cd /tmp
 wget -nv https://github.com/watchexec/watchexec/releases/download/1.13.1/watchexec-1.13.1-x86_64-unknown-linux-gnu.deb
 dpkg -i watchexec-*.deb
 rm watchexec-*.deb
 
-cd /tmp
 git clone https://github.com/circulosmeos/gdown.pl.git
 mv gdown.pl/gdown.pl /usr/bin/gdown
 rm -rf gdown.pl
 
-cd /tmp
-wget https://get.haskellstack.org/stable/linux-x86_64-static.tar.gz
-tar -xf linux-x86_64-static.tar.gz
-mv stack-*-linux-x86_64-static/stack /usr/bin/stack
-rm -rf stack-*-linux-x86_64-static linux-x86_64-static.tar.gz
-
 # Ada
-cd /tmp
 wget -nv https://dl.bintray.com/reznikmm/ada-language-server/linux-latest.tar.gz
 tar -xf linux-latest.tar.gz
 mv linux/ada_language_server /usr/bin/ada_language_server
@@ -30,19 +22,21 @@ mv linux/*.so* /usr/lib/x86_64-linux-gnu/
 rm linux-latest.tar.gz
 
 # Clojure
-cd /tmp
 wget -nv https://github.com/snoe/clojure-lsp/releases/download/release-20200629T153107/clojure-lsp
 chmod +x clojure-lsp
 mv clojure-lsp /usr/bin/clojure-lsp
 
 # D
-cd /tmp
 wget -nv http://downloads.dlang.org/releases/2.x/2.092.0/dmd_2.092.0-0_amd64.deb
 dpkg -i dmd_*.deb
 rm dmd_*.deb
 
+# Elixir
+wget -nv https://github.com/elixir-lsp/elixir-ls/releases/download/v0.5.0/elixir-ls.zip
+unzip -d /opt/elixir-ls elixir-ls.zip
+ln -s /opt/elixir-ls/language_server.sh /usr/bin/elixir-ls
+
 # Elm
-cd /tmp
 wget -nv https://github.com/elm/compiler/releases/download/0.19.1/binary-for-linux-64-bit.gz
 gunzip binary-for-linux-64-bit.gz
 chmod +x binary-for-linux-64-bit
@@ -54,8 +48,18 @@ export GOPATH=/tmp/go
 mv /tmp/go/bin/gopls /usr/bin/gopls
 rm -rf /tmp/go
 
+# Haskell
+wget https://get.haskellstack.org/stable/linux-x86_64-static.tar.gz
+tar -xf linux-x86_64-static.tar.gz
+mv stack-*-linux-x86_64-static/stack /usr/bin/stack
+rm -rf stack-*-linux-x86_64-static linux-x86_64-static.tar.gz
+
+mkdir -p /opt/haskell
+gdown "https://drive.google.com/uc?export=download&id=1GPoR_ja4ns16KCamRgwB-JVag4HK0igz" /usr/bin/hie
+gdown "https://drive.google.com/uc?export=download&id=1qSxj8JjAeetAmNjUGayX0RBARgr5R4Ij" /opt/haskell/hoogle.hoo
+chmod +x /usr/bin/hie
+
 # Ink
-cd /tmp
 wget -nv https://github.com/thesephist/ink/releases/download/v0.1.7/ink-linux
 wget -nv https://github.com/thesephist/ink/releases/download/v0.1.7/std.ink
 wget -nv https://github.com/thesephist/ink/releases/download/v0.1.7/str.ink
@@ -65,7 +69,6 @@ mkdir /opt/ink
 mv std.ink str.ink /opt/ink/
 
 # Kotlin
-cd /tmp
 wget -nv https://github.com/JetBrains/kotlin/releases/download/v1.3.72/kotlin-compiler-1.3.72.zip
 unzip kotlin-*.zip
 cp kotlinc/bin/* /usr/bin/
@@ -73,7 +76,6 @@ cp kotlinc/lib/* /usr/lib/
 rm -rf kotlin-*.zip kotlinc
 
 # PowerShell
-cd /tmp
 wget -nv https://github.com/PowerShell/PowerShell/releases/download/v7.0.1/powershell-7.0.1-linux-x64.tar.gz
 mkdir /opt/powershell
 tar -xf powershell-*.tar.gz -C /opt/powershell
@@ -81,7 +83,6 @@ ln -s /opt/powershell/pwsh /usr/bin/pwsh
 rm powershell-*.tar.gz
 
 # Python
-cd /tmp
 xml="$(curl -sSL "https://pvsc.blob.core.windows.net/python-language-server-stable?restype=container&comp=list&prefix=Python-Language-Server-linux-x64")"
 nupkg="$(echo "$xml" | grep -Eo 'https://[^<]+\.nupkg' | tail -n1)"
 wget -nv "${nupkg}"
@@ -101,171 +102,11 @@ popd >/dev/null
 rm -rf snobol4-*
 
 # Swift
-cd /tmp
 gdown "https://drive.google.com/uc?export=download&id=1eE1-VuZz0gv-fITaGVT_r1UunCLjS-JT" swift.tar.gz
 mkdir /opt/swift
 tar -xf swift.tar.gz -C /opt/swift --strip-components=2
 ln -s /opt/swift/bin/swiftc /usr/bin/swiftc
 rm swift.tar.gz
 
-# Haskell
-mkdir -p /opt/haskell
-gdown "https://drive.google.com/uc?export=download&id=1GPoR_ja4ns16KCamRgwB-JVag4HK0igz" /usr/bin/hie
-gdown "https://drive.google.com/uc?export=download&id=1qSxj8JjAeetAmNjUGayX0RBARgr5R4Ij" /opt/haskell/hoogle.hoo
-chmod +x /usr/bin/hie
-
-# Kalyn
-cd /tmp
-git clone https://github.com/raxod502/kalyn.git
-pushd kalyn >/dev/null
-stack build kalyn
-mv "$(stack exec which kalyn)" /usr/bin/kalyn
-mkdir /opt/kalyn
-cp -R src-kalyn/Stdlib src-kalyn/Stdlib.kalyn /opt/kalyn/
 popd >/dev/null
-rm -rf kalyn
-
-# LOLCODE
-cd /tmp
-git clone https://github.com/justinmeza/lci.git
-pushd lci >/dev/null
-python3 install.py --prefix=/usr
-popd >/dev/null
-rm -rf lci
-
-# Malbolge
-cd /tmp
-git clone https://github.com/bipinu/malbolge.git
-clang malbolge/malbolge.c -o /usr/bin/malbolge
-rm -rf malbolge
-
-# Befunge
-tee /usr/bin/befunge-repl >/dev/null <<"EOF"
-#!/usr/bin/env -S NODE_PATH=/usr/lib/node_modules node
-const fs = require("fs");
-
-const Befunge = require("befunge93");
-const prompt = require("prompt-sync")();
-
-const befunge = new Befunge();
-befunge.onInput = prompt;
-befunge.onOutput = (output) => {
-  if (typeof output === "string") {
-    process.stdout.write(output);
-  } else {
-    process.stdout.write(output + " ");
-  }
-};
-
-const args = process.argv.slice(2);
-if (args.length !== 1) {
-  console.error("usage: befunge-repl FILE");
-  process.exit(1);
-}
-
-befunge.run(fs.readFileSync(args[0], { encoding: "utf-8" })).catch((err) => {
-  console.error(err);
-  process.exit(1);
-});
-EOF
-chmod +x /usr/bin/befunge-repl
-
-# BrainF
-tee /usr/bin/brainf-repl >/dev/null <<"EOF"
-#!/usr/bin/env python3
-import argparse
-import readline
-import subprocess
-import tempfile
-
-parser = argparse.ArgumentParser()
-parser.add_argument("file", nargs="?")
-args = parser.parse_args()
-
-if args.file:
-    subprocess.run(["beef", args.file])
-while True:
-    try:
-        code = input("bf> ")
-    except KeyboardInterrupt:
-        print("^C")
-        continue
-    except EOFError:
-        print("^D")
-        break
-    if not code:
-        continue
-    with tempfile.NamedTemporaryFile(mode="w") as f:
-        f.write(code)
-        f.flush()
-        subprocess.run(["beef", f.name])
-EOF
-chmod +x /usr/bin/brainf-repl
-
-# Elm
-mkdir /opt/elm
-tee /opt/elm/elm.json >/dev/null <<"EOF"
-{
-    "type": "application",
-    "source-directories": [
-        "."
-    ],
-    "elm-version": "0.19.1",
-    "dependencies": {
-        "direct": {
-            "elm/browser": "1.0.2",
-            "elm/core": "1.0.5",
-            "elm/html": "1.0.0"
-        },
-        "indirect": {
-            "elm/json": "1.1.3",
-            "elm/time": "1.0.0",
-            "elm/url": "1.0.0",
-            "elm/virtual-dom": "1.0.2"
-        }
-    },
-    "test-dependencies": {
-        "direct": {},
-        "indirect": {}
-    }
-}
-EOF
-
-# Haskell
-mkdir -p /opt/haskell
-tee /opt/haskell/hie.yaml >/dev/null <<"EOF"
-cradle:
-  direct:
-    arguments: []
-EOF
-
-# Unlambda
-tee /usr/bin/unlambda-repl >/dev/null <<"EOF"
-#!/usr/bin/env python3
-import argparse
-import readline
-import subprocess
-
-parser = argparse.ArgumentParser()
-parser.add_argument("file", nargs="?")
-args = parser.parse_args()
-
-if args.file:
-    with open(args.file) as f:
-        subprocess.run(["unlambda"], input=f.read(), encoding="utf-8")
-while True:
-    try:
-        code = input("λ> ")
-    except KeyboardInterrupt:
-        print("^C")
-        continue
-    except EOFError:
-        print("^D")
-        break
-    if not code:
-        continue
-    subprocess.run(["unlambda"], input=code, encoding="utf-8")
-EOF
-chmod +x /usr/bin/unlambda-repl
-
 rm "$0"
diff --git a/scripts/docker-install-phase6.bash b/scripts/docker-install-phase6.bash
index eefee5a..4efcf57 100755
--- a/scripts/docker-install-phase6.bash
+++ b/scripts/docker-install-phase6.bash
@@ -4,21 +4,133 @@ set -e
 set -o pipefail
 set -x
 
-uid="$1"
+# Befunge
+tee /usr/bin/befunge-repl >/dev/null <<"EOF"
+#!/usr/bin/env -S NODE_PATH=/usr/lib/node_modules node
+const fs = require("fs");
 
-rm -rf /tmp/hsperfdata_root
+const Befunge = require("befunge93");
+const prompt = require("prompt-sync")();
 
-if [[ -n "$uid" ]] && (( "$uid" != 0 )); then
-    useradd --uid="$uid" --password "!" --create-home --groups sudo docker
-else
-    useradd --password "!" --create-home --groups sudo docker
-fi
+const befunge = new Befunge();
+befunge.onInput = prompt;
+befunge.onOutput = (output) => {
+  if (typeof output === "string") {
+    process.stdout.write(output);
+  } else {
+    process.stdout.write(output + " ");
+  }
+};
 
-tee /etc/sudoers.d/99-passwordless >/dev/null <<"EOF"
-%sudo   ALL=(ALL:ALL) NOPASSWD: ALL
+const args = process.argv.slice(2);
+if (args.length !== 1) {
+  console.error("usage: befunge-repl FILE");
+  process.exit(1);
+}
+
+befunge.run(fs.readFileSync(args[0], { encoding: "utf-8" })).catch((err) => {
+  console.error(err);
+  process.exit(1);
+});
+EOF
+chmod +x /usr/bin/befunge-repl
+
+# BrainF
+tee /usr/bin/brainf-repl >/dev/null <<"EOF"
+#!/usr/bin/env python3
+import argparse
+import readline
+import subprocess
+import tempfile
+
+parser = argparse.ArgumentParser()
+parser.add_argument("file", nargs="?")
+args = parser.parse_args()
+
+if args.file:
+    subprocess.run(["beef", args.file])
+while True:
+    try:
+        code = input("bf> ")
+    except KeyboardInterrupt:
+        print("^C")
+        continue
+    except EOFError:
+        print("^D")
+        break
+    if not code:
+        continue
+    with tempfile.NamedTemporaryFile(mode="w") as f:
+        f.write(code)
+        f.flush()
+        subprocess.run(["beef", f.name])
+EOF
+chmod +x /usr/bin/brainf-repl
+
+# Elm
+mkdir /opt/elm
+tee /opt/elm/elm.json >/dev/null <<"EOF"
+{
+    "type": "application",
+    "source-directories": [
+        "."
+    ],
+    "elm-version": "0.19.1",
+    "dependencies": {
+        "direct": {
+            "elm/browser": "1.0.2",
+            "elm/core": "1.0.5",
+            "elm/html": "1.0.0"
+        },
+        "indirect": {
+            "elm/json": "1.1.3",
+            "elm/time": "1.0.0",
+            "elm/url": "1.0.0",
+            "elm/virtual-dom": "1.0.2"
+        }
+    },
+    "test-dependencies": {
+        "direct": {},
+        "indirect": {}
+    }
+}
 EOF
 
-touch /home/docker/.zshrc
-chown docker:docker /home/docker/.zshrc
+# Haskell
+mkdir -p /opt/haskell
+tee /opt/haskell/hie.yaml >/dev/null <<"EOF"
+cradle:
+  direct:
+    arguments: []
+EOF
+
+# Unlambda
+tee /usr/bin/unlambda-repl >/dev/null <<"EOF"
+#!/usr/bin/env python3
+import argparse
+import readline
+import subprocess
+
+parser = argparse.ArgumentParser()
+parser.add_argument("file", nargs="?")
+args = parser.parse_args()
+
+if args.file:
+    with open(args.file) as f:
+        subprocess.run(["unlambda"], input=f.read(), encoding="utf-8")
+while True:
+    try:
+        code = input("λ> ")
+    except KeyboardInterrupt:
+        print("^C")
+        continue
+    except EOFError:
+        print("^D")
+        break
+    if not code:
+        continue
+    subprocess.run(["unlambda"], input=code, encoding="utf-8")
+EOF
+chmod +x /usr/bin/unlambda-repl
 
 rm "$0"
diff --git a/scripts/docker-install-phase7.bash b/scripts/docker-install-phase7.bash
new file mode 100755
index 0000000..29e0075
--- /dev/null
+++ b/scripts/docker-install-phase7.bash
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+set -e
+set -o pipefail
+set -x
+pushd /tmp >/dev/null
+
+# Kalyn
+git clone https://github.com/raxod502/kalyn.git
+pushd kalyn >/dev/null
+stack build kalyn
+mv "$(stack exec which kalyn)" /usr/bin/kalyn
+mkdir /opt/kalyn
+cp -R src-kalyn/Stdlib src-kalyn/Stdlib.kalyn /opt/kalyn/
+popd >/dev/null
+rm -rf kalyn
+
+# LOLCODE
+git clone https://github.com/justinmeza/lci.git
+pushd lci >/dev/null
+python3 install.py --prefix=/usr
+popd >/dev/null
+rm -rf lci
+
+# Malbolge
+git clone https://github.com/bipinu/malbolge.git
+clang malbolge/malbolge.c -o /usr/bin/malbolge
+rm -rf malbolge
+
+popd >/dev/null
+rm "$0"
diff --git a/scripts/docker-install-phase8.bash b/scripts/docker-install-phase8.bash
new file mode 100755
index 0000000..eefee5a
--- /dev/null
+++ b/scripts/docker-install-phase8.bash
@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+set -e
+set -o pipefail
+set -x
+
+uid="$1"
+
+rm -rf /tmp/hsperfdata_root
+
+if [[ -n "$uid" ]] && (( "$uid" != 0 )); then
+    useradd --uid="$uid" --password "!" --create-home --groups sudo docker
+else
+    useradd --password "!" --create-home --groups sudo docker
+fi
+
+tee /etc/sudoers.d/99-passwordless >/dev/null <<"EOF"
+%sudo   ALL=(ALL:ALL) NOPASSWD: ALL
+EOF
+
+touch /home/docker/.zshrc
+chown docker:docker /home/docker/.zshrc
+
+rm "$0"